Risk- and protective factors for memory plasticity in aging

ABSTRACT

Risk and protective factors for cognitive function in aging may affect how much individuals benefit from their environment or life experiences by preserving or improving cognitive abilities. We investigated the relations between such factors and outcome from episodic-memory training in 136 healthy young and older adults. Tested risk factors included carrying the ?4 variant of the apolipoprotein E allele (APOE), age, body mass index, blood pressure, and cholesterol. Protective factors included higher levels of education, intelligence quotient (IQ), physical activity, fatty acids, and vitamin D. Average increases in memory performance were seen after training, with ample variation between individuals. Being young, female, and having higher IQ were positive predictors of memory improvement. No other relationships were observed. Similar benefit was observed across APOE allelic variation. This indicates that beyond IQ, age, and sex, known risk -and protective factors of cognitive function in aging were not significantly related to memory plasticity.     

Cognitive mapping approach analyzing societal decision‐making

Cognitive mapping (CM) approach is reviewed, and the method is applied in analyzing an important case of societal decision‐making. It is shown that CM is an effective way of representing argumentation, consequences, and the linkage between the concepts. The method integrates causal modelling and rational choice theory with parts of cognitive psychology. CM allows for a systematic arguing of issues. The decision‐making problem described here concerns building a new nuclear power plant in Finland. There occurred strong proponents representing mainly the industry and technocratic and engineering experts, and an equally strong resistance represented by ordinary citizens, parliamentarians, and experts. The argumentation went ten years pro and cons before the parliament in 1993 decided against building the proposed nuclear power plant. It gives an ideal case to study the argumentation and contradictions there in as a whole by developing and applying a cognitive mapping approach.     

Sleep quality and treatment of social anxiety disorder

Background and Objectives: Poor sleep is prevalent among individuals with social anxiety disorder (SAD) and may affect treatment outcome. We examined whether: (1) individuals with SAD differed from healthy controls (HCs) in sleep quality, (2) baseline sleep quality moderated the effects of treatment (Cognitive–behavioral group therapy [CBGT] vs. mindfulness-based stress reduction [MBSR] vs. waitlist [WL]) on social anxiety, (3) sleep quality changed over treatment, and (4) changes in sleep quality predicted anxiety 12-months post-treatment.

Design: Participants were 108 adults with SAD from a randomized controlled trial of CBGT vs. MBSR vs. WL and 38 HCs.

Methods: SAD and sleep quality were assessed pre-treatment and post-treatment; SAD was assessed again 12-months post-treatment.

Results: Participants with SAD reported poorer sleep quality than HCs. The effect of treatment condition on post-treatment social anxiety did not differ as a function of baseline sleep quality. Sleep quality improved in MBSR, significantly more than WL, but not CBGT. Sleep quality change from pre- to post-treatment in CBGT or MBSR did not predict later social anxiety.

Conclusions: MBSR, and not CBGT, improved sleep quality among participants. Other results were inconsistent with prior research; possible explanations, limitations, and implications for future research are discussed. ClinicalTrials.gov identifier: NCT02036658.     

Differences between girls and boys in emerging language skills: Evidence from 10 language communities

The present study explored gender differences in emerging language skills in 13,783 European children from 10 non‐English language communities. It was based on a synthesis of published data assessed with adapted versions of the MacArthur‐Bates Communicative Development Inventories (CDIs) from age 0.08 to 2.06. The results showed that girls are slightly ahead of boys in early communicative gestures, in productive vocabulary, and in combining words. The difference increased with age. Boys were not found to be more variable than girls. Despite extensive variation in language skills between language communities, the difference between girls and boys remained. This suggests that the difference is caused by robust factors that do not change between language communities.