Neuropsychologia
March 17, 2018
Tali R. Marron, Yulia Lerner, Ety Berant et al.
128 citations
Chain free association tasks, in which participants produce a series of related words, can isolate spontaneous associative thinking during creativity. Using fMRI, the default mode network—a brain system linked to internally directed thought—was more active during chain free association than during tasks requiring more controlled thinking, while the left inferior frontal gyrus, part of the executive control network, showed reduced activation. Higher scores on associative fluency, flexibility, and semantic remoteness from the chain free association task correlated with greater default mode network activity and lower left inferior frontal gyrus activity, as well as with better creative performance, but not with intelligence. This suggests chain free association measures may capture unconstrained associative thinking relevant to creativity.
Journal of affective disorders
July 15, 2025
Tyler M Moore, Kathryn Walker, Emma Tung et al.
8 citations
Ketamine alone and ketamine combined with psychotherapy both rapidly reduce depression and PTSD symptoms, with no significant difference between the two approaches over 30 or 180 days. Analyzing overlapping samples of 202, 470, and 624 help-seeking individuals (about 60% female, average age 42) who received either ketamine alone or ketamine plus psychotherapy across 4 to 14 sessions, both groups showed substantial improvement with rapid initial decline followed by stabilization. Exploratory patterns suggested younger females may benefit more from combined treatment, while older males may do better with ketamine alone, but these differences were not statistically significant. Ketamine's effects appear robust enough that adding psychotherapy during acute treatment does not enhance outcomes, though longer-term benefits warrant further study.
Tyler Maxwell Moore, Kathryn Walker, Emma Tung et al.
preprint
Adding psychotherapy to ketamine treatment does not significantly improve depression or PTSD symptoms more than ketamine alone over 30 days. Both approaches produced substantial, rapid symptom improvement that stabilized after 11-15 days. The study analyzed 202 help-seeking individuals (60% female, mean age 41.3 years) who received either ketamine alone or ketamine plus psychotherapy across six sessions. No significant differences in symptom trajectories emerged between the groups, though exploratory analyses suggested younger females might benefit more from combined treatment and older males from ketamine alone. The findings indicate ketamine's effects may be robust enough that concurrent psychotherapy does not enhance short-term outcomes, but longer-term and demographic-specific effects require further study.