Birth Order Psychology: What Science Says About Personality and Siblings

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The EveryDay ABA Podcast

EveryDay ABA

52 episodes

3 days ago

EveryDay ABA is a podcast that demystifies applied behavior analysis (ABA) showing how it’s scientific principles can be applied to improve your every day life. Hosted by a Board Certified Behavior Analyst and two Registered Behavior Technicians, they explore how to navigate relationships, work, family life, and more through the lens of behavior science. Join them weekly for practical tips, real-life examples, and insightful discussions that make ABA accessible and relatable to everyone. If you are certified through the Behavior Analyst Certification Board (BACB) they also offer Continuing Education Units for BCBA, BCaBA, and RBT practitioners.

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Birth Order Psychology: What Science Says About Personality and Siblings

The EveryDay ABA Podcast

59 minutes 55 seconds

3 months ago

Birth Order Psychology: What Science Says About Personality and Siblings

In this episode of EveryDay ABA, Paola, Brittanny, and Leslie break down the science, myths, and lived experiences of birth order through the lens of applied behavior analysis (ABA). From the pressure and perfectionism of the firstborn, to the diplomacy and identity struggles of the middle child, to the freedom and creativity of the youngest, they explore how sibling roles shape behavior, relationships, and even career paths. Drawing on research on personality traits, the hosts connect family dynamics to reinforcement history, motivating operations, and self-management strategies. You’ll hear personal stories of rebellion, responsibility, and resilience; and, learn practical ways to support siblings without creating harmful comparisons or rivalry. Whether you’re the eldest, middle, or youngest, this conversation will give you fresh insight into how your place in the family influences your behavior; and, how ABA can help you rewrite unhelpful patterns.

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After listening to the episode, participants will be able to:

Differentiate between cultural myths about birth order traits and research-supported findings.
Describe how caregiver attention and environmental variables influence role assumptions among siblings.
Evaluate how ABA principles can be used to promote equity and reduce harmful sibling comparisons, fostering healthier family dynamics.

References:

Adler, A. (1931). What life should mean to you. Little, Brown.
Ashton, M. C., & Lee, K. (2022). The HEXACO personality inventory: A new measure of the major dimensions of personality. In P. Corr (Ed.), Personality and individual differences: Revisiting the classic theories in light of new evidence (pp. 233–252). Routledge.
Eckstein, D., & Kaufman, J. A. (2012). The role of birth order in personality: An enduring intellectual legacy of Alfred Adler. Journal of Individual Psychology, 68(1), 60–74.
Lehman, K. (2009). The birth order book: Why you are the way you are. Revell.
Lehmann, J.-Y. K., Nuevo-Chiquero, A., & Vidal-Fernandez, M. (2018). The early origins of birth order differences in children's outcomes and parental behavior. Journal of Human Resources, 53(1), 123–156.
Rohrer, J. M., Egloff, B., & Schmukle, S. C. (2015). Examining the effects of birth order on personality. Proceedings of the National Academy of Sciences, 112(46), 14224–14229.
Washington Center for Equitable Growth. (2019). The “Mighty Girl Effect”: How fathers of firstborn daughters tend to support gender equity. Washington, DC.