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Welcome to the DAPPER Lab

The development of aggression and pathological personality laboratory.

Overall Goals of the Dapper Lab

Through the framework of developmental psychopathology, the laboratory conducts research examining the etiology of aggressive and antisocial behaviors that increase the risk of contact, and involvement in the justice system. In particular, we focus on the role of personality traits frequently associated with antisocial and aggressive behaviors, namely psychopathy (callous and unemotional traits), narcissism, Machiavellianism, and borderline personality. Further we examine how these behaviors and personality traits are influenced by parenting.


Aggression is the intent to threaten, harm, or injure another person's well-being. Aggression can take on two forms (overt and relational), and two functions (proactive and overt).

Personality can be defined as the thoughts, emotions, and behaviors of an individual that are fairly stable across time and space. I focus on the 'dark triad' of personality, which consists of three socially malevolent personality traits, namely psychopathy, Machiavellianism, and narcissism. I also examine borderline personality, as the construct often overlaps with features of the dark triad.

Current projects are:

Personality and the subtypes of aggression
Laboratory Study on Hostile Attribution Biases
Dark Parenting and Psychopathology

icon Undergraduate Projects

I actively mentor several undergraduate students in their pursuit of independent research projects. Current projects that we have are:

The Impact of Trauma on Mental Health
Eating Disorders and Greek Life
Attitudes Towards Police
Humor and Mental Health





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  • Exploring Narcissism, Psychopathy, and Machiavellianism in Youth: Examination of Associations with Antisocial Behavior and Aggression
    Journal of Child and Family Studies, 22, 355-367.

    We sought to explore the differential associations of callous-unemotional traits, narcissistic traits, and Machiavellian traits on overt aggression, relational aggression, delinquency, behaioral dysregulation, and emotional dysregulation in a community sample of boys and girls [...]

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  • Mortality of Youth Offenders Along a Continuum of Justice System Involvement
    American Journal of Preventive Medicine, 50, 303-310

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You can find us in the Department of Psychology, SUNY Oneonta, 180 Ravine Pkwy, Oneonta, NY 13820.

We are located at SUNY College at Oneonta

icon 1 180 Ravine Pkwy, Oneonta, NY 13820, Fitzelle Hall, Department of Psychology

icon 2 607-436-3219


emailDapper.Lab at

We sometimes encounter people, even perfect strangers, who begin to interest us at first sight, somehow suddenly, all at once, before a word has been spoken.