The neurobiological basis of affect is consistent with psychological construction theory and shares a common neural basis across emotional categories.
Level 4 - case-series / case-control
Cross-sectional human neuroimaging (fMRI) laboratory study
PubMed 36494449 · doi:10.1038/s42003-022-04324-6
What was done
Participants underwent functional magnetic resonance imaging (fMRI) while experiencing discrete emotional states (anger, sadness, and happiness). The researchers evaluated eight a priori-defined model-specific prediction tests on neural response amplitudes and patterns to compare two competing models of human affect: basic emotion theory (positing dedicated category-specific neural circuits) and psychological construction theory (positing idiosyncratic construction via shared psychological primitives).
What was found
The abstract reports no numerical values, effect sizes, or test statistics. Across the eight prediction tests, neural response amplitudes and patterns showed idiosyncratic mechanisms and a common neural basis shared across emotion categories, consistent with psychological construction theory.
Why it matters
This study provides empirical neuroimaging evidence supporting the view that emotions are constructed from shared, domain-general brain mechanisms rather than hardwired, category-specific circuits.
Limits
The abstract does not state the sample size, participant demographics, or specific emotion induction protocols. Only three emotional categories were evaluated (anger, sadness, happiness), and no quantitative effect sizes or confidence intervals are provided in the abstract.