Behavioral science should start by assuming people are reasonable.

Should policymaking assume humans are irrational? Using empirical, theoretical, and philosophical arguments, we suggest a more useful frame is that human behavior is reasonable. Through identifying goals and systemic factors shaping behavior, we suggest that assuming people are reasonable enables behavioral science to be more effective in shaping public policy.

The self-regulation of automatic associations and behavioral impulses.

The distinction between automatic processes and controlled processes is a central organizational theme across areas of psychology. However, this dichotomy conceals important differences among qualitatively different processes that independently contribute to ongoing behavior. The Quadruple process model is a multinomial model that provides quantitative estimates of 4 distinct processes in a single task: the likelihood that an automatic response tendency is activated; the likelihood that a contextually appropriate response can be determined; the likelihood that automatic response tendencies are overcome when necessary; and the likelihood that in the absence of other information, behavior is driven by a general response bias. The model integrates dual-process models from many domains of inquiry and offers a generalized, more nuanced framework of impulse regulation across these domains. The model offers insights into many central questions surrounding the operation and the interaction of automatic and controlled processes. Applications of the model to empirical and theoretical concerns in a variety of areas of psychology are discussed.

Separating multiple processes in implicit social cognition: the quad model of implicit task performance.

The authors argue that implicit measures of social cognition do not reflect only automatic processes but rather the joint contributions of multiple, qualitatively different processes. The quadruple process model proposed and tested in the present article quantitatively disentangles the influences of 4 distinct processes on implicit task performance: the likelihood that automatic bias is activated by a stimulus; that a correct response can be determined; that automatic bias is overcome; and that, in the absence of other information, a guessing bias drives responses. The stochastic and construct validity of the model is confirmed in 5 studies. The model is shown to provide a more nuanced and detailed understanding of the interplay of multiple processes in implicit task performance, including implicit measures of attitudes, prejudice, and stereotyping.

Testosterone as a social inhibitor: two case studies of the effect of testosterone treatment on language.

This study aimed to correlate testosterone levels with natural written language in 2 people undergoing testosterone therapy. Two participants, a man receiving treatment for loss of upper-body strength and a female-to-male transgendered individual, supplied records of injections over 1-2 years along with e-mails or journal entries as writing samples. Results showed that higher testosterone levels correlated with reduced use of words related to social connections. Language relating to anger, sexuality, and achievement was unrelated to testosterone levels. It appears that testosterone steers attention away from social connections but not necessarily toward concerns with aggression or sexual activity.