Discussion
depression, WL, anxiety
SECONDARY
This study examined the feasibility, acceptability, and, as a secondary aim, the potential efficacy of two 8-week BA groups in ABI. In line with “Traditional” BA, the AP group emphasised planning reinforcing activities outside of the weekly sessions alongside strategies to mitigate planning difficulties post-ABI. The AE group, or “Experiential BA”, emphasised engaging in pleasurable activities within weekly sessions. Both groups were feasible and acceptable, even when delivered online, and had high fidelity. In the AP group, 58.33% of individuals had MCID improvements in activity levels from baseline to post-group, compared to 50% AE and 38.5% WL. Only AP participants showed within-group statistically significant activity level improvements that were maintained at 1-month. On secondary efficacy outcomes, both AP and AE participants had significantly lower depression scores post-intervention versus WL, though only AP participants demonstrated reductions in anxiety, difficulties with motivation, and the inhibiting effects of uncertainty. Secondary improvements in both groups were maintained 1-month post-intervention.