Abstract Amazon's Mechanical Turk (MTurk) is a relatively new website that contains the
major elements required to conduct research: an integrated participant compensation
system; a large participant pool; and a streamlined process of study design, participant ...

Why can't our political leaders work together as threats loom and problems mount? Why do
people so readily assume the worst about the motives of their fellow citizens? In The
Righteous Mind, social psychologist Jonathan Haidt explores the origins of our divisions ...

Abstract We identified individual-level diurnal and seasonal mood rhythms in cultures across
the globe, using data from millions of public Twitter messages. We found that individuals
awaken in a good mood that deteriorates as the day progresses—which is consistent with ...

The goal of the book remains what it always was—to present a short introduction to the
critical thinking skills that will help the student to better understand the subject matter of
psychology. During the past decade and a half there has been an increased emphasis on ...

Validity refers to “the best available approximation to the truth or falsity of propositions”(Cook
& Campbell, 1979, p. 37; italics added). In this sense, we cannot speak of the validity or
invalidity of research per se. Rather, it is the statements, inferences, or conclusions we ...

Fully updated to reflect the latest developments, the third edition of Research Methods In
Clinical Psychology offers a comprehensive introduction to the various methods,
approaches, and strategies for conducting research in the clinical psychology field. ...