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  1. The impact of dopamine receptor D4, temperamental negativity, and household chaos on young twins’ externalizing behaviors

    Article • Developmental Psychobiology, April 2023, Wiley

    Matthew Ryan Jamnik

  2. Categorical Human Mind: A Dialectical Daoist Yin-Yang Perspective

    Article • Psychology Research and Practice, January 2023, Omniscient Pte Ltd

    Matthew Ryan Jamnik

  3. Birth Complications and Negative Emotionality Predict Externalizing Behaviors in Young Twins: Moderations with Genetic and Family Risk Factors

    Article • Behavior Genetics, May 2021, Springer Science + Business Media

    Matthew Ryan Jamnik

  4. The Darwin-God dilemma: A totemic approach to the meaning of life and human existence.

    Article • Evolutionary Behavioral Sciences, October 2020, American Psychological Association (APA)

    Yueh-Ting Lee, Matthew Ryan Jamnik

  5. The Southern Illinois Twins/Triplets and Siblings Study (SITSS): A Longitudinal Study of Early Child Development

    Article • Twin Research and Human Genetics, July 2019, Cambridge University Press

    Matthew Ryan Jamnik

  6. Health Outcomes Associated With Internalizing Problems in Early Childhood and Adolescence

    Article • Frontiers in Psychology, January 2019, Frontiers

    Matthew Ryan Jamnik

  7. A Multimethodological Study of Preschoolers' Preferences for Aggressive Television and Video Games

    Article • The Journal of Genetic Psychology, April 2018, Taylor & Francis

    Lisabeth DiLalla, Matthew Ryan Jamnik

  8. The dark side of self-control: High self-control leads to better outcomes when engaging in bad behaviors

    Article • Personality and Individual Differences, January 2017, Elsevier

    Matthew Ryan Jamnik