Reward, novelty and spontaneous alternation

It has been suggested that rats' propensity for “win-shift” behaviour in spatial memory and spontaneous alternation tests reflects a species-specific foraging strategy which leads them to avoid places where they have recently found food. An alternative explanation is that they avoid places which are familiar. In three experiments using a T-maze, we evaluated these accounts by comparing the probability of avoiding or re-entering a recently visited arm, as a function of whether food had or had not been found on the previous visit. Each rat received a series of 16 exposure-test trial pairs over 8 days. Neither alternation nor repetition of the previous choice was differentially reinforced. Experiments I and II forced rats to enter a specific arm before a subsequent choice, and differed in the overall probability of reward; in Experiment III all choices were free. In all three experiments the probability of alternating was greater after nonreward than after reward. This effect occurred more reliably on later tests within a day, little difference appearing on earlier tests. It was concluded that there was no evidence for a spontaneous “win-shift” tendency as such, and that these and other results can be adequately accounted for by a combination of exploratory tendencies (spontaneous alternation) and the conventional effects of reward.     

The use of a coping strategy focused support group for carers of dementia sufferers

The paper describes the development and evaluation of coping strategy focused courses for informal carers of dementia sufferers (The Ways of Coping Course). Carers who attended the courses were interviewed before, immediately after and three months later, measuring their coping strategies, level of depression and strain, knowledge concerning dementia and satisfaction with the courses. They were compared to a second group of carers who attended educationally-focused courses consisting of a series of seminars on dementia. Both groups showed a signijicant increase in problem focused and decrease in distancing coping strategies but no change in levels of depression or strain. The carers in the Ways of Coping group showed an increase in acting out behaviour immediately following the courses and also showed greater levels of satisfaction with the courses overall.     

Science Communication,Cultural Cognition,and the Pull of Epistemic Paternalism

There is a correlation between positions taken on some scientific questions and political leaning. One way to explain this correlation is the cultural cognition hypothesis (CCH): people's political leanings are causing them to process evidence to maintain fixed answers to the questions, rather than to seek the truth. Another way is the different background belief hypothesis (DBBH): people of different political leanings have different background beliefs which rationalize different positions on these scientific questions. In this article, I argue for two things. I argue that two attempts by proponents of the CCH to discredit the DBBH fail. And I argue that this matters, because while the CCH makes epistemic paternalistic interventions seem called for (as some philosophers have argued compellingly), the DBBH does not. The DBBH makes it much easier to stay closer to an ideal of deliberative democracy.