A level playing field for children: why it matters in tackling inequality over the lifecourse

In Episode 5 of Series 4 of the DIAL Podcast we’re in conversation with Andreas Peichl, Professor of Macroeconomics and Public Finance at the University of Munich and Principal Investigator of a DIAL project looking at the impact of childhood circumstances on individual outcomes over the life-course (IMCHILD). 

Tackling inequalities in adolescence and working life

In Episode 3 of Series 4 of the DIAL Podcast, we are in discussion with Richard Blundell. Richard is the Ricardo Professor of Political Economy at UCL, director of the ESRC Centre for the Microeconomic Analysis of Public Policy at the Institute for Fiscal Studies and the principal investigator of a DIAL project looking at human capital and inequality during adolescence and working life. In this episode we explore the work done by this project tackling inequalities in adolescence and working life.

 

Transcript

Christine Garrington  0:00 

Welcome to DIAL a podcast where we tune in to evidence on inequality over the life course. In series four, we’re looking at what’s been learned from DIAL projects about how and when inequality manifests in our lives and what its longer-term consequences might be. For this episode, we’re delighted to be joined by Richard Blundell, David Ricardo Professor of Political Economy at UCL, and director of the ESRC Centre for the Microeconomic Analysis of Public Policy at the Institute for Fiscal Studies. Richard is also the principal investigator of a DIAL project, looking at human capital and inequality during adolescence and working life. So welcome, Richard, thank you very much for joining us today.

Richard Blundell  0:40 

Thank you, Christine.

Christine Garrington  0:41 

I wonder if you can just start by telling us a little more specifically what this project has been investigating and why.

Richard Blundell  0:48 

Yeah, I’d be delighted to. What we’re looking at in this project is the evolution of inequality through adolescence and working life. Relating to the education streams, people choose how it affects their outcomes going forward into working life, what happens during working life, what kind of training seems to work, what routes to better jobs are for people who don’t, for example, go to higher education, university. Whether training can offset some of the gender gaps that we’ve been seeing opening up in the labour market, and whether choices in higher education matter for future labour market outcomes. So it’s very much about not the early years of school – there’s another project looking at that, that runs in parallel with our project, similar investigators, we’re working together with them. What we’re looking at here then is from adolescence onwards, and how the inequality evolves during adolescence and working life.

Christine Garrington  1:58 

So one area of focus has been women and work really very, very interested in in this, you’ve looked at the gender pay gap, the role of childcare, on women’s ability to return to work, and indeed, on the role of job training, among other things. So what would you say for you are the key things to have emerged from this particular area of work Richard?

Richard Blundell  2:18 

Yes, this is obviously absolutely central, the kind of pay gap between men and women and how it opens up through working life is something that’s been really hard to tackle and getting behind this, what are the drivers of it, and how to address it is really key to solving some of the most important inequalities that we see in working life. We’re working with researchers, mainly economists, and education researchers in Norway, in the UK and in France. That’s rather good, because those three countries have rather different systems of routes through education, into work, and different opportunities for women and men as they progress through their working life. And we wanted to understand what those differences could tell us about the gender pay gap. And therefore what policies could be perhaps most useful in addressing the gender pay gap.

Christine Garrington  3:25 

There are a couple of key things to come out of this one there.

Richard Blundell  3:28 

Some of its, you know, in some sense, pretty obvious. That is that work experience is really important for pay and for earnings as you go through your career for career progression. And of course, when children come along, women spend a fair amount of time not in work, perhaps still in employment on maternity leave, but not actually gaining the work experience that turns out to be so important in career progressions. We’ve kind of known that. But it’s become really acute, even part-time work is really not sufficient for women to keep up at work with their male colleagues. There are two kind of routes to addressing this. One is to provide good quality childcare, that can have two major benefits. One is it can provide good quality inputs and care for children, which is particularly important, especially in disadvantaged families. But it can also allow women to spend more time at work and developing their career profiles. There’s also a very large importance of mothers and fathers spending time with their children. And so when children come along, it’s kind of inevitable, really, that work may take second place, and that there’ll be less time engaged in work experience in progression. And remember, it’s exactly these years in the 20s and early 30s, where all the big career progression is made in working life, and women really fall behind there. So an alternative we’ve been looking at, and it turns out to be rather interesting is to work instead of on work experience, but on the human capital itself, once women come back into work.

Christine Garrington  5:25 

So what might that look like in reality, then Richard?

Richard Blundell  5:27 

So you can imagine the following scenario, a woman or a man, but unfortunately, it’s particularly typically, the woman who takes time off, once she returns to work, you can imagine her engaging in a training programme, and that can make up some of the loss. Well, we weren’t that optimistic about that to begin with. But we’ve become more optimistic for two reasons, particularly in the UK and in Norway. In Norway, using the Population Register, we can follow people, right the way through their working careers, we can follow the whole of the Norwegian population. It’s an exhaustive data set on everything everybody does – their qualifications, where they’re working, their family structure, and so on. And what we found is that it’s particularly successful for women to who’ve had a child early on in their career to return to some kind of schooling qualifications, and that can have a big boost to their career profiles and address some of the gender gaps that occur. In the UK it turns out similarly, women who returned to work spend quite a bit of time in training. And we found that that training, work related on the job training, it has to be accredited, and it has to be work related, those things have a payoff. And we feel that there’s real room for improving this type of training. It’s all part of designing education and training routes, during your working career, that work much better than the ones we currently have. And boy in in the UK, we’ve been training way behind in the organisation of formal routes into education and training through your working life, especially for those who don’t go to university.

Christine Garrington  7:29 

Now, I want to move on to talk about COVID. And obviously, although not expected when your project began, the pandemic, obviously, as well as being a terrible thing for us all did provide, however, what I’m guessing was quite a fascinating and important opportunity to look at the impacts of COVID on on people’s lives in this context of inequality. So what did you, what did you get to focus on there?

Richard Blundell  7:52 

Once we were into the first major wave of COVID, it was clear that it was going to exacerbate a lot of the inequalities during adolescence, during education and during working life, let alone health of course. The longer run impact that we’re seeing is on learning – the loss of learning, the loss of school time, the loss of engagement in learning, because of being not able to go to school, those children from deprived families have had much, much more learning loss over this period, than the privilege than children in more privileged families. It suddenly became clear that space was really important. But for learning for children, it was absolutely critical. If children didn’t have a quiet place with good digital access, a good setup for engaging in online classes, then that already put them behind behind. And there’s many studies showing there’s a huge gradient in space, in digital access, in access to these kinds of technologies across the income and and socio economic gradient. Losses have been extremely large, up to half a year of schooling loss for many, many children. The second point is that if you’re at home with educated parents, who are working from home and still have time to interact with you, you’re going to get that input from them. schooling is the great equaliser. It puts children from deprived backgrounds in an environment where they can learn perhaps things that they couldn’t learn at home. And that was taken away. The work on Norway and France shows exactly the same there. So learning loss, huge. This doesn’t usually happen in recessions by the way. This was very, very specific to COVID.

Christine Garrington  9:55 

And what about when you looked at matters related to work.

Richard Blundell  9:58 

All on the job training, apprenticeships just didn’t happen. In fact, for those in their early careers, you know – 18, 19, 20 – there was an almost complete end to apprenticeships. Apprenticeships fell back by 70% or more for that younger group, exactly the group that I was mentioning before. It’s vital that we get this on the job, accredited training, because they’re the ones not going to university, those going to university have been served rather better. I know from my experience here that we’ve at UCL, we’ve been keeping online classes and activities going at a pretty high level, actually. And the kind of students that we have here, can engage in that quite fully. But that’s very different for a student who didn’t make it to university, and who’s trying to gain their experience and training through apprenticeships, there’s just been no engagement. So this loss of learning has been huge.

Christine Garrington  11:11 

I’m interested to know whether women were worse affected than men in this context?

Richard Blundell  11:16 

We thought it might affect women more but in fact, overall in employment and what have you, it’s been pretty neutral in the UK, that’s just because of the structure of industry we have here. But it hasn’t been neutral at home. We’ve seen, of course, mothers and fathers both having to do more childcare, because schools have been closed during lockdown, or children have been at home during self-isolation, even in periods without lockdown. But mothers of taken, have borne the brunt of the childcare at home, we followed women and families in surveys throughout COVID. And found that although childcare activities have increased for both male and female parents, there really has been an extra load on women. And again, that’s going to affect their careers, and other aspects of their life going forwards. All those things that we were concerned about before COVID. And that were the absolute centre of this project have all become all the more heightened through COVID. And I think the policy recommendations that have come out of this project are very, very relevant for the post COVID world that we’re now entering.

Christine Garrington  12:41

Yeah, I wonder how how easy it has been? Or how difficult I guess it’s probably the better question to to feed those recommendations in such a fast moving event that COVID has been and, you know, was it possible for that to feed through all of those findings, all of those important things into the policy sort of making cycle in order to try to mitigate some of those impacts? Or, or was that that must have been very challenging.

Richard Blundell  13:09 

For policy makers, at least civil servants have been very open, of course, to try and to figure out what’s been going on. And remember, the initial policy responses, at least on simple measures of inequality have been remarkably successful. You know, we haven’t ever had a recession, really, where there’s been so much support thrown into the economy, of course, we’re gonna have to pay for that. But some of the short run impacts, I think were mitigated, what we’ve focused on here, are the longer run ones, you know the the loss of learning, the loss of training, the loss of work experience, they’re not showing up even yet, they’re going to show up in the next few years. And it’s critical, we have an opportunity now to address them. And there is a lot of interest across the whole policy world, and government and around the world. In addressing this. In fact, as part of this project, we fed into the G20 meetings last year in Rome, and a major part of our work was used to suggest a kind of coordinated approach to designing the best interventions now to address what’s been going on with loss of education, and loss of work experience and training across more or less the whole developed world.

Christine Garrington  14:27 

Really great to hear that there’s been such an appetite for findings like these important findings to feed into policy, but I guess the devil is in the detail, right?

Richard Blundell  14:37 

Unfortunately, these are gonna have to be huge programmes. And the thing about huge programmes is that they can be hugely expensive and not necessarily very effective. We need to get this right. We need to get these education interventions and these training interventions done in the most efficient and effective way. And that’s where we can learn from other countries that do at least some things better, some things worse, we’re all learning from each other. And this project which brought in, you know, Norway, which has a pretty effective system of education and training right across the board, not just for those going to university, which is where we tend to focus. And France, which has, again, a very different system. So we can learn, we can learn from that. But yeah, I see a long impact of COVID, not just long COVID. But it’s hidden a bit at the moment, by the way, because of the uptick in the economy. You know, there’s quite a demand for certain types of jobs, as you’d expect, when there’s, you know, we’re coming out of a big, big recession like that, but I’m pretty sure that that’s hiding these big losses, they will turn up over time. So yeah, there’s, there’s a big hunger for this. We’re feeding a lot of a huge amount and working a lot with Department of Education here with the Treasury on what what should be done with other policy groups. And similarly in Norway, and France.

Christine Garrington  16:08 

Now, I know we’ve talked about the labour market a bit, but I wonder whether there’s anything else that you really would like to stress about that side of things, because this was a major part of your work?

Richard Blundell  16:19 

We had to invent things on the hoof and everyone was involved in that the furloughs remember, the furlough system didn’t exist. In fact, in the UK, and in many other economies, we’ve not, we’ve not been particularly good at providing general what one might call social insurance. That is, if people fall on hard times get reduced earnings, you know, do we make up the difference? At least in the in the shortish run, we don’t particularly do that very well, in the UK, we target very low incomes. We have a very targeted universal credit and benefit system. So it does prop up incomes at the bottom. And it does that actually quite well. Not always administratively perfectly, but it does it. But if you look at someone who’s on a kind of lower middle income, which is the group that really was hit during COVID, there’s very little support for them. Universal credit doesn’t do a great job, it just doesn’t replace their incomes – the furlough system did it replaced 80% of their income. And, and it was very successful in doing that, to the extent that as I said, you know, income falls and inequality increases didn’t happen in the way they often do during recessions. So in that sense, these policies have been very successful. On the downside, you know, they’re the things I mentioned, they’ve been very good at short run income support, at least for for many groups. But they’ve not been very good yet at addressing these losses in, in human capital investments. And work is about two things. It’s about earning money today. And it’s about in investing in skills that will earn you even more, or give you a better career profile, at least in the future. And it’s those longer term investments that I feel, or a fear of being really left to one side.

Christine Garrington  18:17 

I wonder whether you’ve seen anything that relates to how these inequalities manifest in respect of where people live, where they come from, is there something around place that’s quite important as well?

Richard Blundell  18:28 

We kind of knew there were geographical differences and differences by family background, it just, you know, we can see that in workings of our society. But I didn’t realise how big they were. And I think it’s been quite a shock to us. It’s not surprising, you know, that the emphasis now is on levelling up, at least it’s suggested it is in education is very important. What we found in this research, you know, looking at how well people do at school, and then into university, if they go there, and then into work is really striking, you know, some areas of the UK, for example, and this would be true in other economies as well, by the way, very few children actually make it to university. Take areas like Grimsby or Skegness those kinds of places we almost think of as left behind communities, children just don’t do so well. And not only that, if they do manage to get into higher education, they often don’t return to those communities. So those communities, once you look at people in work that just have many, many fewer people with higher education qualifications and skills to other areas. Let’s call them the thriving areas, many of which are in the southeast or in the more successful cities. And these differences are really important because they’re having huge impacts in the way people think about their well being levelling up political discourse.

Christine Garrington  20:07 

You talked earlier a bit about their fabulous data in Norway that you had available to you. But we’ve also got some great data here in the UK, haven’t we, particularly when it comes to tracking young people through education?

Richard Blundell  20:20 

We have the National Pupil database that follows all children through school, through higher education, or through their education and training and into work right up to about the age of 28/29 now. So we’re, and that will go on. So this is a remarkable, a remarkable dataset of the kind that you would typically think of finding only in a Scandinavian country. So this has allowed us to do these differences. And we can look at two children doing exactly the same courses in the same university, and just look at the differences of outcome by parental background and they’re still there, they’re still quite important. So parental background really matters. But so does course choices and university choices. These things, I guess we knew that have a big impact. All these things that people are doing through their their education, and early working lives and at university have a long lasting impact. And many of the differences you can take back to geography, and parental background, and the early education investments. This is really providing a real detail in what’s driving the inequalities that we see at least in working, working careers.

Christine Garrington  21:47 

Yeah, on that note, I’d like to put a final question to you really about, you know, for those interested who in tackling inequality, obviously, including yourself and your fellow researchers, the wonderful team that you’ve talked about there. But for those who have responsibility for creating interventions through policy or practice, are there any essential takeaways, implications or recommendations for your project that you’d like to share?

Richard Blundell  22:11 

If there’s something we’re going to really have to address the in the UK and elsewhere it’s these geographic divides. It’s what is creating a lot of the political turmoil, I think, whether it be almost in any elections, we’ve seen the left behind areas. You know, the evidence is clear, these geographical divides, by socioeconomic background, and by areas are really important and long lasting. And it’s really up to us to figure out the best ways now, to address them as quickly as possible. They’ve been exacerbated through COVID and so they become even more urgent, I think, in the policy debate.

Christine Garrington  22:56 

And I guess my final final question, is there something specific that we should be focusing on?

Richard Blundell  23:03 

There’s a lot, but let me just pick on one, it’s a kind of old topic, it’s the it’s the point about good jobs. You can have successful interventions for people who come from, you know, backgrounds or haven’t been quite successful at education investments, you can make better choices during education. And we’ve seen how, with the data and work we’ve been doing, how that can be improved. But it’s really the match of the skills, the firms and the kind of work related nature of these training investments that’s so important. And what we have learned here is that, you know, small interventions on one aspect of this are not going to solve the problems. So you can think of the example of the, of just providing a job. What we’ve seen here is that just providing a job, say, Amazon warehouse job is not really going to help much with career profiles, you really need to match workers, develop their skills, and bring the right kind of firms that can enhance career profiles into these more left behind deprived areas. If we can get that to work, then there’s great hope that we can do something for the careers and wage profiles of people who’ve been doing rather less well than we’d like in society.

Christine Garrington  24:39 

Thanks to Richard Blundell for joining us for this episode of the DIAL podcast. You can find out more on the DIAL website at dynamicsofinequality.org and also on the IFS website at ifs.org.uk. Much of the work of Richard and his colleagues has also fed into the Deaton Review on inequality so do take a look there as well. We hope you enjoyed this episode, which is produced and presented by Chris Garrington of Research Podcasts.

Why rich parents have rich children

by Sreevidya Ayyar, Uta Bolt, Eric French, Jamie Hentall MacCuish, Cormac O’Dea

The children of rich families tend to go to better quality schools, have higher cognitive skills, and complete more years of schooling. This blog exploits unique data from the National Child Development study to determine these early childhood factors go on to have long-run impacts on an individual’s lifetime earnings, perpetuating a cycle of wealth. These results suggest that policies that equalise investments, such as improving school quality, could promote income mobility.

Rich parents have rich children. Why is that the case?

The children of rich families tend to differ from their poorer peers in multiple ways. They have fewer siblings and more educated parents. Their parents spend more time with them and send them to better quality schools. Their cognitive skills are higher, and they complete more years of schooling. All of these channels have been found to affect an individual’s earnings. However, in order to design policies to improve intergenerational mobility, we need to understand how these channels interact with each other in generating correlations in lifetime income across generations.

Take the example of school quality. Attending a high-quality school may have direct long-run effects on an individual’s lifetime earnings by creating a more valuable professional network, for example. However, attending a higher quality school can also have indirect effects on lifetime earnings through improved cognitive skills and/or the student staying in education for longer. Each of these channels are more likely to benefit the kids of richer parents, who tend to have access to better schools. In a new paper we use mediation analysis to quantify the different channels through which parental income can impact an individual’s lifetime income. We find that intergenerational earnings persistence is mainly explained by differences in investments received during childhood, which in turn drive differences in cognition, years spent in education, and ultimately lifetime earnings.

We exploit unique data from the National Child Development Study (NCDS), which initially surveyed families of the entire population of children born in one particular week in 1958 and has followed them up until today.  The NCDS contains rich information on: family income and circumstances during childhood, indicators of quality time that parents spent with the children, proxies for the quality of schools that they attended, measures of cognitive skills, as well as final educational outcomes and earnings throughout the lifecycle.

Table 1 shows gradients for some of our channels of interest by parental income tertile.  The table shows that children from high-income households have fewer siblings and more educated parents than those born to lower income parents. Teachers report that high-income parents are more interested in the education of their children.  Furthermore, children of high-income parents are more likely to go to schools where: parents attend educational meetings at age seven, student-teacher ratios are low at age 11, and a high fraction of students are doing GCEs at age 16 (an optional exam for progressing to further education).  As a result, children from richer households develop greater cognitive skills; at age 16, reading scores were 21% of a standard deviation higher on average for children with high-income parents compared to children with low-income parents.

Table 1 describes only a subset of the variables we use.  We combine these variables using a factor analytic approach to predict latent time investments, school quality and cognition, similar to Heckman et al. (2013).  The factor analytic approach allows us to use all measures available to us by treating them as noisy measures of school quality, parental time, and cognition.

Table 1 Sample means, by parental income

Table 1 Sample means, by parental income

Note: The final column reports P-values from the F-tests testing the null hypothesis of equality of means across parental income tertiles. The time investment measures are teacher-reported measures asked when the children are 7, 11, and 16. Teachers can evaluate parents as very interested, a little interested, not interested at all. We report the fraction of mothers and fathers who are very interested.

We find the intergenerational elasticity of earnings, or IGE (which is a measure of the relationship between parental and child lifetime income), to be 0.32 for men and 0.24 for women. The first part of Figures 1 and 2 shows the fractions of this relationship explained by differences in family environment, time investments, school quality, cognition at 16, and completed years of schooling when we only allow for direct effects of each variable on lifetime income. These variables explain over half of the IGE –– 54% and 62% for men and women, respectively (the remainder is explained by factors beyond the ones we consider, such as better job networks).

Figures 1 and 2 summarise the main for results for men and women respectively.

Figure 1

Figure 2

In the first panel of each figure, we find that years of schooling and cognition explain significant and large fractions of the IGE, both for men and women.  We then investigate whether schooling and cognition are driven by earlier life investments and family background.

In the second panels of Figures 1 and 2, we allow for indirect effects via years of schooling. For example, for cognition, we now additionally account for its effect on lifetime income via its effect on years of schooling. Doing so, we find that the fraction of the IGE that was previously explained by differences in years of schooling can actually be explained by differences in cognition, instead. This suggests that it is not parental income per se, but the higher cognitive levels of children of high-income parents that encourages higher educational attainment.

The next level of our analysis, illustrated in the third panel of each figure, addresses the sources of cognitive skills.  We allow for parental time investments, school quality, and family background to affect the IGE not just directly and via years of schooling, but also via cognition. We then find that the fraction of the IGE that comes from the cognition gradient can largely be explained by differences in time and school quality investments received during childhood. This is consistent with previous literature that has found significant effects of parental investments on cognitive development.

Lastly, we let family background – which comprises mother’s and father’s education, and number of siblings – have an indirect effect by affecting investments. Once we do so, family background explains 19% (34%) of the IGE for men (women). This contrasts with the zero effect of family background that we find in our baseline analysis. In other words, family background matters, but only because it affects investments, which then affect cognition and years of schooling. This result is consistent with Carneiro et al and Akresh et al. who find that increases in parental education lead to more favourable child outcomes. However, we also find that even if we control for family background, the remaining parental income gradient of investments explains 28% of the IGE. This suggests that higher parental income directly leads to higher investments in children, and not only runs through family background, a point which we have developed in greater detail in a forthcoming paper. This supports Bastian and Lochner’s (2021) conjecture that the increase in financial resources from programmes such as the Earned Income Tax Credit are what drives improvements in child outcomes.

Thus, we conclude that the main driver of intergenerational earnings persistence are differences in investments received during childhood which subsequently leads to improved cognition and more years spent in education.  Many of these investments, such as school quality, are the subject of public policy debate.  Our results suggest that policies that equalise these investments could improve income mobility.

The Intergenerational Elasticity of Earnings: Exploring the mechanisms, is research by Uta Bolt, Eric French, Jamie Hentall-MacCuish and  Cormac O’Dea.

Why and how do rich parents have rich children?

In Episode 12 of Series 3 of our podcast, Jamie Hentall MacCuish from University College London and the Institute for Fiscal Studies discusses findings  from DIAL’s TRISP project on the intergenerational elasticity of earnings or why rich parents have rich children. 

The Intergenerational Elasticity of Earnings: Exploring the Mechanisms is a DIAL Working Paper. 

 

 

Transcript

Christine Garrington 0:00

Welcome to DIAL a podcast where we tune in to evidence on inequality over the life course. In series three we’re discussing emerging findings from DIAL research. For this episode, we’re talking to Jamie Hentall MacCuish from University College London and the Institute for Fiscal Studies. He’s been investigating why rich parents have rich children. I started by asking him to explain the background to the research.

Jamie Hentall MacCuish 0:26

If you will permit me I think it’s a bit hard to answer that question without very quickly saying what the paper is about. So in it, we decompose the intergenerational elasticity of earnings or the IGE, which is the correlation between parents and children’s earnings. And we do this to try and understand what mechanisms transmit privilege from one generation to the next. We were using this dataset – the national cohort data study or NCDS – for another paper with a slightly different focus, and we realised the data set offered a unique window into the mechanisms affecting the IGE. Now the NCDS follows a single cohort of people born in a particular week in 1958. From the moment of their birth, up until now as they approach retirement. And it really is a globally unrivalled resource for social scientists due to its combination of information about family background, parental effort and time investment in their children and children’s ability, educational outcomes and later life earnings. Having this information allows us to disentangle the relative importance of family background parental investments in children, further education and ability in explaining the correlation between parents’ and children’s earnings. Now, I mean, I’ve said it’s a globally unrivalled data set what really makes it globally unrivalled is how forward looking this policy was in 1958. I mean, other countries have since introduced similar datasets, but much later meaning that now we don’t have data that covers really most of the working life of these group of individuals, which really makes it a fascinating window into what explains that intergenerational correlation in earnings or IGE.

Christine Garrington 2:10

What exactly was it about having wealthy or poor parents that you wanted to get to grips with specifically in this piece of research?

Jamie Hentall MacCuish 2:19

Why wealthy parents have wealthy children and vice versa? So the children of rich families tend to differ from the poorer peers in multiple ways. They have fewer siblings and a more and more educated parents, their parents spend more time with them and send them to better quality schools. Their cognitive skills are higher at the end of compulsory education, and they complete more years of total education. All these channels have been found to affect an individual’s earnings. But in order to design policies to improve intergenerational mobility, we need to understand the relative importance of these channels and how they interact with each other to generate correlations in lifetime earnings.

Christine Garrington 3:00

Okay, so what did you actually do then once you know, once you sort of started digging into the data, what did you actually do?

Jamie Hentall MacCuish 3:06

A multi-level mediation analysis. Basically, that means we work backwards to see how much of the IGE is explained by each mechanism. So that’s probably pretty cryptic. But in the first level, that we started at we only allow for direct effects on a child’s earnings of the years in education, their cognitive ability, the quality of the school they attended, and the parental investment they received and their family background. So in this first level, for example, we find that education accounts for 43% of the IGE amongst females. However, in the next level, we account for the fact that other channels refer to events earlier in the child’s life, than total years of education because really, total years of education is determined by further education decisions. And so other events plausibly impact on the years of education. Once we account for both the direct effects as well as these indirect effects through years of education, the fraction of the IGE explained for females by education collapses to just 2% to continue with the example given earlier, and cognitive abilities at the end of compulsory schooling really explained most of this difference.

Christine Garrington 4:22

Can you help us unpack that a little bit Jamie? What does that actually imply?

Jamie Hentall MacCuish 4:25

Once you account for cognitive ability at the end of compulsory schooling, the fact that children of richer parents spend longer in education doesn’t account for much of the persistence in earnings between generations. And then we then extend the analysis back to more levels to account for the fact that parental investments and stalling might, like school quality, might impact cognitive ability at 16. And that family background might impact parental investment decisions, or the parents’ choice of school.

Christine Garrington 4:52

You mentioned a little bit earlier about, you know, the amazing data resource that the NCDS is. Are we able to sort of tease out a little bit more about the sorts of things that people are asked in that study that would help you with, with this research?

Jamie Hentall MacCuish 5:07

There are multiple things asked and multiple tests. So it’s not just survey questions. There were tests; reading tests, math tests administered to these children in schools. They measure their weight at birth, the researchers went into the children’s school and ask the teacher their impressions of how interested the mother and father are in the child’s education. With, it was asked how many outings the parents took their children on, and these are I mean, we combine all of these measures about parental investments into sort of using a latent factor analysis to tease out a measure of how much the parents invest in their children. And similarly, with the child’s ability, we have measures of reading scores, math scores, and then teacher ratings of these children on maths and reading ability. So I mean, it’s it’s a very, I could go on. It’s a very, very rich data set. And it’s yeah, it’s not just survey data. It’s tests administered medical information. Yes, it’s really quite detailed.

Christine Garrington 6:11

You’ve touched on this a little bit already. But when you looked at the data what were the key differences? Tell us more about the key differences that emerged between the children of wealthier and poorer parents.

Jamie Hentall MacCuish 6:23

The children of richer families tend to differ in multiple ways from their poorer counterparts: fewer siblings, more educated parents, better parental time investments and school quality investments, higher cognitive skills, and more years of total education. But for us, that was really just the jumping off point to then analyse which of these differences matter most to explain this correlation of earnings between parents and generations from this persistence of inequality from one generation to the next.

Christine Garrington 6:51

And you took into account obviously a range of other factors as well what factors mattered most in all of this and how did they play out?

Jamie Hentall MacCuish 6:59

So once we accounted for all the levels of analysis, so the for the effect of a family background and early investment on cognition and years of education, what we found is that family background and investment in early childhood mattered the most, the relative importance being different for men and women. For women, the most important was family background followed by school quality. And for men, parental time investment mattered most followed by family background.

Christine Garrington 7:24

So this is all very interesting, but I’m wondering now you know what are the important takeaways from the research about this relationship between how well off a parent is and their child’s life lifetime income prospects, for example?

Jamie Hentall MacCuish 7:38

It simply what factors we found mattered most? It seems that to explain the persistence of inequality in earnings across generations, early childhood investments and family background really matter the most. And higher educational choices, for example, aren’t one of the mechanisms generating persistence in inequality in earnings across generations.

Christine Garrington 8:02

Right, I wonder if there’s any more to say there about from a policy perspective, if you like for those committed to want to seek and create a more equitable, a fairer playing field for all children, regardless of their background and how rich their parents are, what sorts of things are most relevant? Are they the things that you’ve outlined already? Or is there anything more that they can take away from this?

Jamie Hentall MacCuish 8:21

Obviously, you want to be careful making too many policy suggestions off one piece of research, but that said, I think our research really is in alignment with a large and growing literature that says early childhood investments are one of the best levers available to reduce intergenerational inequality. I think anything the government, our research would say and so I think with a large growing body of research say, that anything government could do to reduce the inequality in investments in early childhood would be one of the most powerful mechanisms to reduce intergenerational inequality.

Christine Garrington 8:56

The Intergenerational Elasticity of Earnings: Exploring the Mechanisms is a DIAL Working Paper by Uta Bolt, Eric French, Jamie Hentall MacCuish and Cormac O’Dea from the Trends in Inequality: Sources and Policy or TRISP project . You can find out more on the DIAL website at dynamicsofinequality.org. Thanks for listening to this episode of our podcast, which was presented by me, Chris Garrington and edited by Elina Kilpi-Jakonen.