Early childhood programs have effects on skills that go beyond educational attainment

In a recent post on community colleges, I made the off-hand remark that “early childhood programs also affect adult earnings by increasing employment rates and wage rates even for individuals at the same level of educational attainment”. What is the evidence for this assertion, and why is it important?

The evidence comes from some of the more important studies of preschool and child care programs. For example, the Perry Preschool program is estimated to increase the employment rate of former participants, compared to the control group, by 14 percent at age 40. However, the Perry program’s effects on educational attainment predict that the employment rate will only increase by 2 percent. Presumably, these “extra employment rate” effects are due to better and more-job-relevant skills that are not reflected in higher educational attainment.  Similar results occur for former child participants in the Abecedarian program, which provided full-time child care and preschool from birth to age five.

These “extra employment rate” effects are important because they reflect additional benefits of early childhood programs. Frequently, benefit-cost analyses of early childhood programs base their projections of the future earnings effects of a program by the program’s effects on educational attainment. If these “extra employment rate” effects persist, then many benefit-cost analyses of early childhood programs will tend to understate program benefits.  In my book, Investing in Kids,   these extra employment rate effects are included.

Such extra employment rate effects are consistent with the notion that some of the important effects of early childhood programs are due to effects on “soft skills”. Soft skills of being able to get along with co-workers, supervisors, and customers, and reliably showing up at work on time, should affect a person’s employability and wages even if their educational attainment does not increase.

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Community colleges and local economic development

In chapter 12 of Investing in Kids, I consider how more community college graduates affect a state’s economic development. The skills from more graduates of community colleges will spur a state’s economic growth by increasing the skill level of the state’s labor force.

I make the conservative assumption that we increase the number of community college graduates with associate degrees without any subsequent increase in bachelor degrees. I also use estimates about how many associate degree graduates will stay in the state, and the effect this has on increasing the number and quality of jobs.

Based on this analysis, getting one person to earn an associate’s degree provides state economic development benefits of $127,000. This is the increase in the present value of state residents’ per capita earnings.

It is important not to assume that “high-skill” is the same as “holding a bachelor’s degree”. There are many technical and vocational skills that are needed by the U.S. economy, and that are best provided via a certificate or an associate’s degree.

There are a number of important demonstrations and experiments exploring how best to increase student success at community colleges. For example, the well-known research group MDRC has done much work in this area.

Early childhood education can also significantly affect associate degree attainment. This is a big part of the mechanism by which early childhood programs affect the economy, by affecting subsequent degree attainment. However, early childhood programs also affect adult earnings by increasing employment rates and wage rates even for individuals at the same level of educational attainment.

Community colleges also play an important role in economic development by their frequent involvement with customized job training programs. Customized job training programs are business incentives in which state or local governments try to encourage job growth or retention by providing individual businesses with free or low-cost job training that is customized to the individual business’s personnel needs. As discussed in chapter 5 of Investing in Kids, the research evidence suggests that customized job training is 10 times as effective in creating jobs, per incentive dollar, as more typical business tax incentives.

Community colleges thus should be a vital part of any state’s economic development strategy. Community colleges can enhance labor supply quality while more directly encouraging increases in labor demand. Early childhood programs can help by putting more state residents on the path where they can take good advantage of the education and job training provided by community colleges.

Posted in Business incentives, Early childhood programs, Economic development, Incentive design issues | 1 Comment

Increasing bachelor degree attainment as an economic development strategy

In chapter 12 of Investing in Kids, I also provide estimates for how an increase in the attainment of bachelor degrees will affect a state’s economic development. Although some bachelor degree holders will leave their home state, others will remain. Enough will remain that an increase in bachelor degrees has large effects on attracting better jobs and raising state per capita earnings.

I estimate that for each state resident that becomes a holder of a bachelor’s degree, the increase in the present value of per capita state earnings is $376,000. This benefit is sufficient to justify costly programs to increase bachelor degree attainment. For example, a program that would increase bachelor degree attainment by 10% would make sense if its costs per participant were up to $37,600.

The U.S. has long been far ahead of most of the world in bachelor degree attainment. But this advantage is narrowing or disappearing. For example, consider statistics from the Organization for Economic Cooperation and Development, an organization of 34 mostly high-income democratic market economies (most Western European countries, Japan, etc.).  Over all 34 OECD countries, the percentage of 25-34 year olds with a bachelor’s degree or higher degree in 2008 was 26.9%. The U.S. had a higher percentage at 32.3%. But the difference is narrowing.  In 2001, the OECD average bachelor degree attainment for this age group was 17.9%, versus the U.S. figure of 29.9%. The U.S advantage has narrowed in just 7 years from 12.0% to 5.4%.

Obviously there are policies dealing with student financial aid, how colleges are organized, and K-12 that can affect bachelor degree attainment. But college attendance and degree attainment may also be affected by early childhood programs.  There is evidence from Perry Preschool, the Chicago Child-Parent Center, and the Abecedarian program that suggests effects on college attendance and graduation.

An important unanswered question is how universal access to preschool would affect college graduation rates for children from middle-class families. The existing long-term studies of preschool consider disadvantaged children. Their baseline college attendance and graduation rates tend to be low. It seems plausible that effects of preschool on college graduation rates of students from middle-class families might be higher, as more of these students will be on the verge of being able to succeed at college with a little better preparation.  Given the importance of higher education to U.S. economic competitiveness, the effect of universal preschool on college graduation deserves further research.

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Reducing high school dropouts as an economic development strategy

In chapter 12 of Investing in Kids, I also consider how reducing the high school dropout rate benefits a state economy. As with early childhood programs and other educational investments, reducing high school dropouts affects economic development by affecting labor force quality. Many of those persons who otherwise would be high school dropouts will remain in that same state. Their presence will attract more and better jobs to the state. This raises state per capita earnings, my definition of state economic development benefits.

In analyzing the benefits of reducing high school dropouts, I conservatively assume that only a small proportion of the additional high school graduates will go on and complete post-secondary education. Specifically, I assume that only one-fifth will get further education and only 6% will get a bachelor’s degree.  Economic development benefits will be greater if additional measures are taken to increase post-secondary education.

I estimate that converting one high school dropout to a high school graduate has economic development benefits of $175,000 for a state economy. This figure is less that the present value of earnings due to high school graduation. For example, it does not include the additional earnings for high school graduates who move out of state.

Most public policies that attempt to reduce high school dropout rates will not have 100% success. Some students targeted would have graduated from high school even without the dropout prevention program. Not all students targeted by the program will graduate from high school. However, even a program with very small effects on high school graduation rates can justify considerable expenses per student, based on state economic development benefits. For example, consider a program that causes 1% of the population to switch from being a high school dropout to a high school graduate. Such a program would have state economic development benefits exceeding costs even if it cost any amount up to $1,750 per student.

Better skill quality for state residents has enormous payoffs for a state economy. Such payoffs can justify costly investments as long as these investments produce results.

None of this is to say that high school programs are the best way to reduce high school dropouts. There are few high school programs that are proven successes in reducing high school dropouts.  In contrast, high-quality preschool has been shown to reduce high school dropouts. For example, the Chicago Child-Parent Center Program increased the high school graduation rate by 6.8 percentage points.  School reform and improvement is promoted by high-quality early childhood programs.

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How to make the economic case for early childhood programs to the business community and policymakers

One question I have sometimes been asked is how to most effectively make the economic case for early childhood programs to the business community and to policymakers. I certainly have no magic answers. But here are a few suggestions, based on my own experience.

First, do the preparatory work necessary to elicit participation by business and policy makers.  I have presented at numerous state and local “business summits” on the economic case for early childhood programs. The extent to which such summits are actually attended by the business community and policymakers has varied quite a bit. Sometimes I have ended up preaching to the choir of early childhood advocates, with only a few token business attendees. Other times the business and policy maker attendance has been strong. Unfortunately, “if you schedule it, they will come” does not always work for business summits. You need to convince people that it is worth their while to come, have the right people asking people to come, and be sensitive to schedules of the business community and policy makers.

Second, combine larger events with smaller scale meetings. Some of my best meetings have been small meetings with groups such as Chamber of Commerce Education Committees, or a few local business leaders or legislators. In such small groups, concerns about how to ensure quality and accountability for results can be more frankly shared, and possible compromise solutions discussed.

Third, you need advocates within the business community to present some of this case. Policy wonks like me are helpful (I hope), but insufficient to make the case to the business community and the policy community. You need to identify advocates within the business and policy maker community who are particularly open to the argument that early childhood education can make a difference.  Sometimes such an advocate speaks out of personal experience of the difference that educational opportunities have made to the advocate’s success. Sometimes the advocate has children in the public school system. Personal commitment matters.

Fourth, be patient. This economic case needs to be developed over time and in a wide variety of ways. Success may depend on showing that local programs can work. Developing such locally-based evidence takes time. But if a local program can grow and establish a reputation for success, its political roots will help maintain the program through the sometimes-wild political winds.

In short, there are no quick fixes. Large-scale implementation of early childhood programs is a fundamental change in the educational structure of the U.S. Making such a fundamental change is challenging. There will be resistance. The economic case is important because it provides a justification for such fundamental changes, in that these changes are productive ways of improving economic wealth and well-being. But people need to be persuaded of this economic case over time, through a variety of means, and by a variety of evidence.

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Aggressive online pricing by Amazon

As of right now, March 28 at a little after 1 p.m.,  Amazon is aggressively pricing my book, Investing in Kids. The paperback price is $12.12 (regular price is $20.00), and the hardback is priced at $20 (regular price is $45).

If you’re interested, you might take advantage of this aggressive pricing while it lasts. Amazon seems to change its prices unpredictably. I have no control over their pricing.

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Increasing secondary school test scores also provides economic development benefits, but probably with a lower benefit-cost ratio than elementary improvements

In chapter 12 of Investing in Kids, I also consider the economic development benefits of improvements in test scores in secondary school. These economic development benefits are the increase in a state’s per capita earnings. These increases in per capita earnings will occur as some of these better secondary students stay in the state, and help the state attract and grow more and better jobs.

To analyze state economic development benefits of improving secondary test scores, I use a similar methodology to what I used to estimate the economic development benefits of early childhood programs, or of elementary test scores in a previous post. I use data on how secondary school test scores are related to adult earnings. I also use estimates of how many high school students will stay in the same state during their working years. I use estimates of how improved labor force quality will affect job and earnings growth.

The secondary score test score improvement that is considered is an increase of 0.1 in “effect size units”.  The “effect size” educational jargon measures test score improvements as a fraction of the standard deviation of test scores across a regular cross-section of students. For secondary schools, test scores vary quite a bit across students. An effect size of 0.1 corresponds to what the average student in high school normally learns in about 5 months, or in about one-half of a school year.

The previous post on elementary school test score improvements also considered an improvement in test scores of 0.1 in effect size units. However, test scores do not vary as much across students in early elementary school. Therefore, this improvement at an elementary level corresponds to only 1 month or so of extra achievement.

An effect size increase of 0.1 at the secondary level is probably more costly to achieve than the same effect size increase at the elementary level.  It is probably harder to increase test scores by 5 months at the secondary level than by 1 month at the early elementary school level.

The secondary test score increase I consider is for one student. I estimate that the state economic development benefits of a five month increase in test scores at the secondary level for one student will be $7,050. This is the increase in the state’s earnings per capita that is associated with this increase in test scores for one student.

A benefit of $7,050 is sufficient to justify a costly investment. We could imagine a variety of high school reforms that might improve test scores by the requisite amount at a cost per student of less than $7,050.

However, the ratio of economic development benefits to costs for many secondary school reforms will be less than the ratio for many elementary school reforms.  As mentioned in a previous post, the benefits of a 0.1 effect size improvement for one student at the elementary level are slightly higher, at $8,312. And this elementary school test school improvement will often be less difficult to achieve than a similar effect size improvement at the secondary level.

Why are earlier K-12 investments likely to have higher returns?  The biggest reason is that relatively modest test score improvements at the elementary school level are more strongly associated with adult earnings gains than is true for secondary school test score gains. Test score gains at the elementary level may be more strongly associated with improvements in soft skills. Furthermore, skills may be more malleable for younger children.

As pointed out previously, we might do still better by investing even earlier, in high quality preschool, parenting, and child care programs. This does not mean we should not do later investments. These later investments are needed to take full advantage of the earlier investments. But we should put a high priority on the earlier investments given their higher returns.

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Jean Jennings Bartik, 1924-2011

Jean Jennings Bartik, my mother, died on March 23, 2011. She was 86.

My mom lived a life full of determination, integrity, a sense of humor, and a positive philosophy. Those of us who knew her and loved her, and who were loved by her, will be forever shaped by her forceful nature.

My mom’s life may be of broader interest beyond her loved ones. After graduating from Northwest Missouri State at the age of 20, in 1945, she headed off for adventure in Philadelphia. Her first job title was as a “computer” working to calculate ballistics table. She then was selected to be one of the first six computer programmers in the world, on the ENIAC computer. She later worked to convert the ENIAC to a stored program computer, and also worked on UNIVAC I.

You can find more about her life in her Wikipedia entry and on the website of the computer history museum named after her at Northwest Missouri State University. There also is an hour long interview with her on You Tube that was recorded in October of 2008, when she was inducted as an Honorary Fellow at the Computer History Museum in Palo Alto. She also appears in a recent documentary, “Top Secret Rosies”, on the female “computers” of World War II. In addition, Kathy Kleiman for many years has been working on a documentary on the first six computer programmers, the ENIAC programmers, all of whom were women, and why their role was so long overlooked.  CNN did a nice obituary.

Her memoir is in editing and should be published soon. Obviously such a memoir is a great gift to her family. But I think the memoir also sheds light on the development of computers, and how sexism has limited the role of women in many scientific occupations.

My mom loved her life despite facing many challenges. As she said numerous times, she “chose to be happy”. She greatly enjoyed in her last years speaking to numerous audiences, particularly those with young women.  Her big issue was trying to encourage more women to enter and reach the top of scientific and technical occupations.  I hope her life and example will inspire more diversity in these fields.

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Improving elementary school test scores also yields state economic development benefits

Early childhood education is obviously not the only way to improve local labor force quality, and thereby improve local per capita earnings. Other policies can also improve local labor force quality. Many such policies can do so in a cost-effective manner.

Chapter 12 of Investing in Kids explores the potential for other types of improvement in local labor force quality to provide “economic development benefits” for a state economy. These “economic development benefits” are the improvements in per capita earnings in the state as the better labor force quality encourages the growth of more jobs and better jobs in the state.

One “labor force quality” improvement that I consider is a modest improvement in early elementary school test scores. I consider an improvement in early elementary scores for one student. This improvement is assumed to be what education researchers call an “effect size” of 0.1. In early elementary school, an effect size of 0.1 is typically equal to or slightly more than what students typically learn in one month of school.

I analyze the effects of this improvement for one student using methods similar to what I use to analyze the economic development benefits of universal pre-k and other early childhood programs. I use studies of how early elementary test scores are related to later earnings.  I adjust downwards for the possibility that the student may move out of state. And I make moderate assumptions about how attractive a better quality labor force is to business.

I conclude that a test score improvement in early elementary school of 0.1 in effect-size units for just one student yields economic development benefits for the state economy of $8,312. This is the present value of the increased per capita earnings for the state economy associated with this improvement for one student.

If such an improvement were made for an entire class of 20 students, the benefits would be quite large. For such an improvement for a class size of 20 students, the total state economic development benefits would be 20 times $8,312, or about $166,000.

This analysis is essentially the “benefit” side of a benefit-cost analysis. Whether a policy intervention to improve test scores would pay off would also depend on program costs. But it certainly seems possible to envision many policies that might improve test scores in early elementary school by a month or two by more modest costs than these economic development benefits. How much would a tutor cost for one student? What about improvements in teacher quality due to better personnel and compensation systems? What about better curricula and better use of technology? How about expanded and improved summer school, or a longer school year?

The key point is: there are large economic development benefits to even slight improvements in academic performance in early elementary school.  Therefore, it is worth making even quite costly investments if they are shown to be effective in increasing early elementary performance.

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Why Head Start should be improved, not defunded

Head Start is currently threatened with a significant funding cut. As part of the political fight over budget deficits, the House of Representatives has  proposed significant funding cuts to Head Start for fiscal year 2011 (the current fiscal year) of over $1 billion. This represents about a 15% cut from the previous fiscal year.  These funding cuts are estimated to reduce Head Start and Early Head Start by over 200,000 slots.

One argument made for these funding cuts largely relies on the results from the recent Head Start Impact Study. This study used random assignment, so it is worth taking seriously. This random assignment experiment compares effects for Head Start applicants of being offered enrollment in Head Start for a year, versus being denied enrollment. Those denied enrollment may of course access whatever alternative preschool and child care services they choose. In some cases, despite the intent of the experiment, the control group ends up enrolling in Head Start, although at a much lower rate than the treatment group. The control group ended up spending almost as many hours per week in non-paternal care as the treatment group, but with less reliance on Head Start for non-paternal care.

Based on the Head Start Impact Study, the average Head Start center has some test score benefits for the treatment group relative to the control group at the end of the Head Start year. But these test score effects versus the control group are in most cases no longer statistically significant at the end of first grade. The control group is able to catch up with the treatment group by making somewhat faster progress in kindergarten and first grade.

Obviously these estimated results are discouraging for Head Start advocates. Why, despite these results, does it make sense to improve Head Start rather than cut its funding?

First, the overall research findings for Head Start are much more positive than suggested by this one study. There are several research studies using good methodologies that suggest significant long-run benefits of Head Start. A study by Eliana Garces, Duncan Thomas, and Janet Currie suggests that Head Start may have significant effects in increasing educational attainment and reducing crime for some groups. This study uses a good comparison group: siblings in which one or more attended Head Start while one or more did not attend Head Start. This comparison controls for many unobserved family and neighborhood factors that are likely to affect how children develop and their later outcomes as adults.

A study by Jens Ludwig and Douglas Miller also finds evidence that Head Start has long-run effects on educational attainment.  This study also uses a good comparison group. The study compares groups of counties. Head Start was started in 1965 as part of the War on Poverty. When Head Start was begun, the Office of Economic Opportunity (OEO) offered extra assistance in writing Head Start grants to the 300 poorest counties.  The Ludwig/Miller study is essentially comparing counties that just made the cutoff of being one of the 300 poorest counties in 1965, with counties that just missed being one of the 300 poorest counties. Counties that just made the cutoff of being one of the 300 poorest were much more likely to have more Head Start activity in Head Start’s initial phases, and through the late 1970s.

The Ludwig/Miller study looks at what happens to these counties in later years.  In later years, the cohorts that could have been involved with Head Start had higher educational attainment in the counties that just made the cutoff for being one of the 300 poorest, compared to similar cohorts in counties that just missed this cutoff.

A study by Deming finds evidence of long-term Head Start effects despite short-run fading of test score effects. This study also uses as a comparison group siblings who did not attend Head Start.  This study found long-run effects of Head Start on educational attainment. However, the test score effects of Head Start faded considerably (for example, two-thirds of these effects disappear by middle school) as students progressed in the K-12 system.

Therefore, Head Start may have long-term effects on important adult outcomes. These effects may occur even with some fading of test score effects. These long-term effects may be due to Head Start effects on soft skills that are not fully captured by effects on test scores.

Second, there is good evidence that at least some Head Start programs have considerably larger effects than those estimated for the average head Start Center in the recent Impact Study. For example, Gormley et al’s estimates for Head Start in Tulsa, Oklahoma suggest effects of Tulsa Head Start on test scores at kindergarten entrance that are over twice the effects in the Head Start Impact Study.

These findings can be reconciled. This reconciliation is speculative, not proven. Head Start may have had large effects relative to available alternatives when first implemented in the 1960s and 1970s. However, since then, state pre-k programs and private preschool programs have expanded significantly in availability and quality. All of these Head Start impact studies are really not comparing Head Start with nothing, but rather with whatever mix of non-paternal care and paternal care are chosen by non-participants.  If the mix of Head Start alternatives has improved over time, whereas many Head Start centers have not, then the relative effects of the average Head Start Center may have declined somewhat over time. In addition, it could be that Head Start’s more important effects are on long-term behavior and health, not on test scores.

In my opinion, this evidence argues for improving Head Start rather than reducing its funding. We need to improve Head Start Centers so that we can match the larger short-term test score and other benefits obtained by the better Head Start Centers and pre-k programs.  Head Start has too much evidence of long-term effects for significant cutbacks to make sense. Furthermore, preschool education in general has too strong evidence of effects for it to make sense to begin dismantling the largest federally-funded preschool program.

The U.S. Department of Health and Human Services is making significant efforts to improve Head Start. For example, HHS is in the process of developing procedures to identify the lowest performing 25% of all Head Start Centers. The contracts for such Centers will then be required to be rebid.

More far-reaching reforms might allow some states, with rigorous oversight, greater flexibility in coordinating Head Start and other funds to create a more coordinated early childhood education system. Some ideas on how to do this have been developed by Steve Barnett and Ron Haskins.

Other recent arguments for reforming Head Start rather than defunding it include Kathleen McCartney, dean of the Harvard Graduate School of Education.  Another recent statement opposing cuts to Head Start comes from Lauren Moore at the blog run by the publication The Future of Children.

One perennial problem in American public policy is that a single negative study seems sufficient to motivate efforts to kill a program rather than reform it. Most educational and social programs at some point may be negatively evaluated versus their alternatives. If the overall logic of the program makes sense, such negative evaluations should be used to motivate reforms rather than kill the program. If any negative evaluation is an excuse to kill a program, why would any program operator want to participate in evaluations? A political climate in which evaluations are only weapons to defund programs, rather than to improve programs, is not likely to lead to continuous improvement in public program quality.

Posted in Early childhood program design issues, Early childhood programs | 6 Comments