Chris Crandall

@chriscrandall.bsky.social

Social psychologist. Boatbuilder and user.

Melvin Manis, professor of psychology at the Univ. of Michigan, died yesterday in Chicago after 3 hours in hospice. Mel was known as scholar social judgment and was the first editor of the Attitudes and Social Cognition Section of the Journal of Personality and Social Psychology (starting in 1979).

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Nine years ago at the Dick Nisbett festschrift. I can hardly express what an honor it was (and is) to be part of the Nisbett legacy. To those who say social psychology has no legacy before 2017, I say “Feh, you cannot know what you’re talking about. This group is loaded with counter-evidence.”

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This post is part of a longer thread and we really wanted to make sure it got attention from our community. Many thank you's to Paige Amormino (@amormino.bsky.social) for putting together this action guide to help scholars advocate for the Directorate for Social, Behavioral and Economic Sciences!

Society for Personality and Social Psychology@spspnews.bsky.social · 4mo ago

We encourage SPSP members to check out an excellent guide prepared by Paige Amormino (@amormino.bsky.social), which offers practical action steps that members can take to speak up for personality and social psychology research: ow.ly/zYBl50YEuVM

Thrilled to serve as a Guest Editor for the Political Ideology and Religion collection for Scientific Reports! This Collection welcomes research examining the psychological determinants of political ideology and religion. Please submit by 12/17/26 and reshare! www.nature.com/collections/...

Political ideology and religion

This Collection welcomes original research articles examining the psychological determinants of political ideology and religion.

nature.com

Here's a 🧵 connecting a number of Mark Rubin's contributions on p-hacking and statistical inference as connected to one's philosophy of science. Under differing regimes, p-hacking and preregistration can have large or small or no consequence for scientific inferences.

Mark Rubin@markrubin.bsky.social · 5mo ago

New preprint from me argues that p-hacking inflates Type I error rates in some philosophies of significance testing but not in others. osf.io/preprints/ps...

p-hacking occurs when researchers conduct multiple significance tests (e.g., p1;H0,1 and p2;H0,2) and then selectively report tests that yield desirable (usually significant) results (e.g., p2 ≤ 0.05;H0,2) without correcting for multiple testing (e.g., 0.05/2 = 0.025). In the present article, I consider p-hacking in the context of two philosophies of significance testing — the error statistical approach and the formal inference approach. I argue that although p-hacking inflates Type I error rates in the error statistical approach, it does not inflate them in the formal inference approach. Specifically, in the error statistical approach, the “actual” familywise error rate (e.g., 1 − [1 − 0.05]2 = 0.098 for two tests) is relevant because it covers both the selectively reported and unreported tests in the “actual” test procedure (i.e., p1;H0,1 and p2;H0,2). In this approach, Type I error rate inflation occurs because the “actual” error rate (0.098) is higher than the nominal error rate (0.05). In contrast, in the formal inference approach, the “actual” familywise error rate is irrelevant because (a) the researcher does not report a statistical inference about the corresponding intersection null hypothesis (i.e., H0,1 ∩ H0,2), and (b) the “actual” familywise error rate does not license inferences about the reported individual hypotheses (i.e., H0,2). Instead, in the formal inference approach, only the nominal error rate is relevant, and a comparison with the “actual” error rate is inappropriate. Implications for conceptualizing, demonstrating, and reducing p-hacking are discussed.

Come #SPSP2026 in Chicago! Over 2,275 have registered for the main meeting (a bit up from the previous year); more than 2,000 for preconferences. It's the largest convention of social and personality psychologists in the world, teeming with new research & ideas. spsp.org/events/annua...

Annual Convention | SPSP

Attended by researchers, educators, and students from around the world, this event is a highlight in the scientific field of personality and social psychology.

spsp.org