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everything is peer reviewed if your friends are judgmental enough

New post! Are representative samples redundant at best? @dingding_peng investigates 3 scenarios: estimating a prevalence, estimating a causal effect in an experiment, and estimating a causal effect (or a correlation!) in an observational study. the100.ci/2023/03/07/non…

Narcissistic admiration vs rivalry, authentic vs hubristic pride: Do these constructs fail to carve nature at its joints? Or is @dingding_peng’s obsessive (vs harmonious) passion for the topic just a sign that she’s harboring malicious (vs benign) envy? the100.ci/2023/06/13/dis…

This is the kind of impact not measured by the h-index. the100.ci/2017/11/23/stu…

New post! Have you been indifferent to invariance? @dingding_peng argues that measurement (non-)invariance gets a lot more interesting once you think about it from a causal perspective. the100.ci/2024/01/10/a-c…

New post by Ruben C. Arslan, but not on The 100% CI because he was too lazy to transfer the Latex formulas to Wordpress.

New post! Ruben C. Arslan asks: Do we have a problem with construct and measure proliferation in psychology? It depends who you ask and it varies by subdiscipline. We respond to a recent piece by Iliescu et al. and try to find some common ground. the100.ci/2024/03/22/ooo…

Should you argue about statistics? In this new blog post, @dingding_peng explains why it's futile. But you should still keep fighting! the100.ci/2024/04/13/is-…

If an effect falls in a forest and no one is there to determine what's the mechanism, is it causal? New post in which @dingding_peng explains why causal effects are indifferent to mechanisms & why effect heterogeneity is the default. the100.ci/2024/06/26/som…

Great short post on causality in psychology that should be read by every PhD student (or just anyone interested in interpreting research generally).

New post! @dingding_peng argues that if you're a substantive researcher, you mainly do statistics to answer substantive research questions. So let's stop putting the statistical model first. the100.ci/2024/08/27/let…

New post! Many idiographically motivated papers in psych leave @dingding_peng unimpressed as they (1) fail to establish meaningful variation, (2) neglect unreliability at the individual level and/or (3) suffer from the usual estimand confusions the100.ci/2024/10/28/idi…

New post The 100% CI by me: I read two books on the alleged teen mental health crisis and social media's role in it, by Jonathan Haidt and by @drlucyfoulkes. Then, I tried to make up my own mind, with limited success.