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8 papers
The Eysenck Personality Questionnaire (EPQ) is a self-report test made by Hans J. Eysenck and Sybil B. G. Eysenck to measure four personality scales: Extraversion (E), Neuroticism (N), Psychoticism (P), and a Lie or social-desirability scale (L). It is based on Eysenck's theory that temperament has biological and genetic roots,…
This paper pooled results from 19 randomized trials with 1,173 adults to see if meditation and yoga change PTSD symptoms. Overall, these mind–body practices were linked to a small-to-medium reduction in PTSD symptoms (effect size = −0.39). The authors found no big differences by type of practice, who was studied,…
In a natural, open-label study at a microdosing event, researchers tested people before and while they expected the effects of a psychedelic truffle microdose. They found better performance on a task that measures convergent thinking and on a task that measures divergent thinking. A short test of fluid intelligence did…
These two studies tested whether men and women differ in jealousy when real infidelity happened rather than in made-up stories. One study used a paper survey with students and the other used a web survey with non-students. Both studies found that men reported more jealousy about the sexual parts of…
This small, exploratory study gave people with moderate to severe major depressive disorder placebo first (19 people) and then a single dose of psilocybin (0.3 mg/kg) to 15 people four weeks later, with all dosing embedded in therapy based on Acceptance and Commitment Therapy (ACT). After the psilocybin session, measures…
Researchers used online surveys to compare three U.S. adult groups—college students (mean age 21), younger adults from Amazon’s Mechanical Turk (mean age 31), and older adults recruited through the Institute for Challenging Disorganization (mean age 54). They found that behavioral procrastination (putting off actions) explained more of the differences in…
This was a 6-week, double-blind, placebo-controlled trial that tested low-dose LSD (20 μg) given twice weekly in 53 adults with moderate to severe ADHD. Both the LSD group and the placebo group showed similar symptom reductions by week 6 (LSD mean change on the ADHD rating scale −7.1 points; placebo…
The authors developed and tested the Relationship Sabotage Scale (RSS) to measure self-defeating patterns in romantic relationships. They ran three studies with a total of 1,365 English-speaking people from varied gender, sexual, and cultural backgrounds. After initial exploratory analyses, a confirmatory factor analysis supported a final 12-item scale with three…
