Combining Cognitive Therapy With Acceptance and Commitment Therapy for Depression: A Group Therapy Feasibility Study

Cognitive therapy (CT) and acceptance and commitment therapy (ACT) have been shown to be effective in treating depression. Although integrating ACT with CT is used for the treatment of anxiety, there is a paucity of integrated CT and ACT treatments for depression and/or dysthymia. The purpose of this study is to determine the feasibility of integrating CT and ACT into a manualized group therapy treatment for depression and/or dysthymia. Over a period of 2 years, 4 consecutive groups were held at a community clinic, with 24 completing the 15-week treatment. Posttreatment and follow-up data revealed satisfaction with the treatment, significant decreases in depression severity, and significant increases in quality of life over the 5 time points. The results support the acceptability and feasibility of a manualized integrated CT/ACT group therapy program for depression and dysthymia.

Age-related differences in semantic priming: evidence from event-related brain potentials

Hasher and Zacks (1988) suggested that aging may affect processes involved in the inhibition of irrelevant information during language processing. Our experiment tested this hypothesis using the N400 event-related brain potential in a priming paradigm and assessed whether older subjects could benefit from the constraints of a sentence context. Twenty older (63 to 88 years) and 20 young (19 to 29 years) subjects read sentences and word pairs. Each final word varied on the degree of relatedness to the preceding context, with some being highly related (BC), moderately related (R), or unrelated (U). Younger subjects showed the expected N400 effect gradient (U > R > BC) in both the sentence and word-pair contexts, while older adults showed no discrimination between the conditions (U = R = BC) for the sentence and limited discrimination (U > BC) for the word pairs. These results support the inhibition-deficit hypothesis, whereby older adults fail to inhibit related items in working memory, and suggest that older adults do not benefit from the constraints of a sentence context.

Impaired allocentric spatial working memory and intact retrograde memory after thalamic damage caused by thiamine deficiency in rats

Rats were tested on an allocentric-spatial working-memory task--delayed matching-to-place (DMTP) in a water maze--before and after either pyrithiamine-induced thiamine deficiency (PTD) or electrolytic lesions of the lateral internal medullary laminae (IML), an area damaged by PTD. DMTP trials consisted of paired swims, with the escape platform in a new location on each trial. PTD rats were impaired at retention delays of 300 s, but not at delays of 4 or 60 s. Rats with IML lesions performed normally at all delays. Both groups displayed normal retention of object-discrimination problems that they had learned at different intervals before treatment (5 weeks, 3 weeks, and 1 week). The results suggest that PTD causes delay-dependent deficits of allocentric spatial working memory and that damage outside the IML is probably responsible. Neither PTD-induced diencephalic damage nor restricted IML lesions appear to produce a global retrograde amnesia.