Key result
A 3-minute sad mood induction significantly increased physiological reactivity and emotion recognition accuracy, even among the 25% of children who did not self-report expected increases in sad affect.
Why the study?
Research on the effectiveness of experimental mood induction procedures in children is lacking, and it was unknown whether these paradigms shift physiological and social-cognitive indices of emotion beyond limited self-reports.
Answers are grounded in this paper and cite their sources.
Mood inductions may shift children's physiology alongside self-report; leaves open questions on nonresponders and broader applicability.
Experimental mood induction procedures are commonly used in studies of children's emotions, although research on their effectiveness is lacking. Studies that support their effectiveness report sample-level changes in self-reported affect from pre- to post-induction, and a subset of children who do not self-report expected changes in affect (i.e., "nonresponders"). Given children's limited abilities to self-report their emotions, it is critical to know whether these paradigms also shift physiological and social-cognitive indices of emotion. We hypothesized increases in physiological reactivity and accuracy for discerning facial expressions of negative emotions from pre- to post-induction and smaller increases for nonresponders, Children (N = 80; 7- to 12-year-olds) completed a facial emotion recognition task and had an electrocardiogram recorded to index high-frequency heart rate variability (HF-HRV) before and after a mood induction procedure. The mood induction involved watching a 3-min sad film clip while attending to their feelings. In the sample overall, from pre- to post-mood induction, children self-reported significantly sadder affect, displayed significant increases in HF-HRV, and displayed significant increases in accuracy of recognizing facial emotion expressions congruent with the mood induced. One quarter (25%) of the sample did not self-report expected increases in sad affect. Contrary to expectations, responders and nonresponders did not differ in mood-induced changes in physiological reactivity or emotion recognition accuracy. These findings support that mood inductions are efficacious in shifting not only children's self-reported affect but also underlying physiological and social-cognitive processes. Furthermore, they are an effective methodology for research questions related to underlying processes even in self-reported nonresponders.
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Garcia et al. (2024) studied this question. Negative mood induction (sad film clip) vs. Pre-induction baseline was evaluated on Changes in self-reported affect, high-frequency heart rate variability (HF-HRV), and facial emotion recognition accuracy. A 3-minute sad mood induction significantly increased physiological reactivity and emotion recognition accuracy, even among the 25% of children who did not self-report expected increases in sad affect.
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