Child disability can reduce educational outcomes for older siblings

August 13, 2020

A recent paper published in The Economic Journal indicates that, in families with disabled children, the second born child is more adversely affected cognitively than the first-born child.

Brothers and sisters share a unique bond. They typically grow up in the same household, with the same parents and similar genetics, and experience life events together. Siblings have important influences on each other's lives. Siblings might teach each other directly; they might also model behaviors. But they also share limited parental resources such as time, attention, and money directed towards one child might be time, attention, and money diverted from another.

The researchers, analyzing data from Florida and Denmark, studied how adverse health shocks to one child could propagate to their siblings. Specifically, they examined the effect of having a younger sibling with a disability on test scores of older children, measured when they were in elementary and middle school.

Sibling disability is significant, as millions of families have at least one disabled child. In 2012-13, for instance, in the United States alone over 6.4 million children aged 3 to 21 (12.9% of all students) were supported under Part B of the Individuals with Disabilities Education Act. The Florida analysis considers disabilities requiring special accommodations in school, while the Danish analysis is based on disabilities recorded in medical registries, so the two sites estimate the effects of fundamentally different types of disabilities. In Florida, the most common early childhood disabilities considered are speech impairment (48%), developmental delay (21%), and language impairment (17%). In Denmark, for the same age range, the most common disabilities considered are congenital malformations and deformations of the musculoskeletal system (20%), congenital malformations of the circulatory system (10%), and congenital malformations of genital organs (9%).

In order to causally identify sibling spillovers resulting from a younger child's disability, the researchers considered families with three or more children where a health shock (disability) occurred in the case of the third child. Within a family, the first- and second-born children face differential exposure to the affected third sibling. This differential exposure is related to the relative ordering of the two children; earlier-born children had more time in the family without the presence of the disabled third child, and are thus less exposed. The researchers did not find differential effect of exposure on birth and early postnatal outcomes for these children, outcomes that were measured prior to the arrival of third born child, disabled or not.

Despite the differences in settings and disabilities considered across Florida and Denmark, the researchers found evidence in both places consistent with there being a sibling spillover. They found that the second-born child in a family had worse outcomes (test scores in Florida, grade point average in Denmark) than did their older sibling when the third-born sibling was disabled, relative to the case in which the third-born sibling was not disabled. The magnitude of these differences is significant; for example, in Florida it is about half of the observed relationship between an extra year of maternal education and children's test scores. These results are concentrated in cases in which the third child's disability is observed early - and therefore, presumably, more likely to affect older siblings in early childhood. Furthermore, the results are driven by physical disabilities - which are likely to be more visible early and require more parental time and attention - rather than cognitive or behavioral disabilities.

"I think we all believe that individuals are affected by their siblings when they are growing up--either directly through their interactions with each other or indirectly through the allocation of parental resources such as money, time, and attention. However, it is very difficult to isolate empirically, because there are so many things simultaneously happening in the family that might also affect these children's outcomes," said the paper's lead author, Sandra Black. "It is exciting that we are able to make progress on this front and document the importance of siblings."
-end-
The paper "Sibling Spillovers" in The Economic Journal will be available at: https://academic.oup.com/ej/article-lookup/doi/10.1093/ej/ueaa074

Direct correspondence to:

Sandra E. Black
Department of Economics, Columbia University,
1022 International Affairs Building
420 West 118th Street
New York, NY 10027
sblack@columbia.edu

To request a copy of the study, please contact:

Daniel Luzer
daniel.luzer@oup.com

Sharing on social media? Find Oxford Journals online at @OxfordJournals

Oxford University Press USA

Related Disabilities Articles from Brightsurf:

College students with disabilities at greater risk for substance abuse
College students with physical and cognitive disabilities use illicit drugs more, and have a higher prevalence of drug use disorder, than their non-disabled peers, according to a Rutgers study.

Asthma among children with developmental disabilities
How common asthma was among children with various developmental disabilities (including attention-deficit/hyperactivity disorder, autism spectrum disorder and vision, hearing or speech delay) was compared to children without disabilities in this survey study.

Children with developmental disabilities more likely to develop asthma
Children with developmental disabilities or delay are more at risk of developing asthma, according to a new study published in JAMA Network Open led by public health researchers at The University of Texas Health Science Center at Houston (UTHealth) as part of the Center for Pediatric Population Health.

Self-help groups empower caregivers of children with disabilities
Caregivers in low-income settings will be able to respond to the challenges of bringing up children with disabilities, thanks to a new model created by the University of East Anglia (UEA) and the Kenya Medical Research Institute (KEMRI).

Unintended pregnancy rates higher among women with disabilities, study says
Pregnancies among women with disabilities are 42% more likely to be unintended than pregnancies among women without disabilities, says a new report published in the journal Perspectives on Sexual and Reproductive Health.

More medical students are telling their schools about disabilities, and getting a response
The percentage of medical students who told their schools that they have a disability rose sharply in recent years, a new study shows.

The unpopular truth about biases toward people with disabilities
Needing to ride in a wheelchair can put the brakes on myriad opportunities -- some less obvious than one might think.

How to improve care for patients with disabilities? We need more providers like them
When it comes to patients with disabilities, the chance of getting a clinician 'like them' is extremely low, which may lead to patients' reluctance to seek care or follow prescribed interventions and treatments.

Progress to restore movement in people with neuromotor disabilities
A study published in the advanced edition of April 12, 2019 in the journal Neural Computation shows that approaches based on Long Short-Term Memory decoders could provide better algorithms for neuroprostheses that employ Brain-Machine Interfaces to restore movement in patients with severe neuromotor disabilities.

Certain physical disabilities may affect outcomes in kidney transplant recipients
Compared with kidney transplant recipients who did not report a disability, recipients with a visual disability were at higher risk of organ failure and recipients with a walking disability were at higher risk of early death.

Read More: Disabilities News and Disabilities Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.