Connectionist modelling in psychology: a localist manifesto

Over the last decade, fully distributed models have become dominant in connectionist psychological modelling, whereas the virtues of localist models have been underestimated. This target article illustrates some of the benefits of localist modelling. Localist models are characterized by the presence of localist representations rather than the absence of distributed representations. A generalized localist model is proposed that exhibits many of the properties of fully distributed models. It can be applied to a number of problems that are difficult for fully distributed models, and its applicability can be extended through comparisons with a number of classic mathematical models of behaviour. There are reasons why localist models have been underused, though these often misconstrue the localist position. In particular, many conclusions about connectionist representation, based on neuroscientific observation, can be called into question. There are still some problems inherent in the application of fully distributed systems and some inadequacies in proposed solutions to these problems. In the domain of psychological modelling, localist modelling is to be preferred.     

Moment-to-moment changes in feeling moved match changes in closeness,tears, goosebumps,and warmth: time series analyses

Feeling moved or touched can be accompanied by tears, goosebumps, and sensations of warmth in the centre of the chest. The experience has been described frequently, but psychological science knows little about it. We propose that labelling one’s feeling as being moved or touched is a component of a social-relational emotion that we term kama muta (its Sanskrit label). We hypothesise that it is caused by appraising an intensification of communal sharing relations. Here, we test this by investigating people’s moment-to-moment reports of feeling moved and touched while watching six short videos. We compare these to six other sets of participants’ moment-to-moment responses watching the same videos: respectively, judgements of closeness (indexing communal sharing), reports of weeping, goosebumps, warmth in the centre of the chest, happiness, and sadness. Our eighth time series is expert ratings of communal sharing. Time series analyses show strong and consistent cross-correlations of feeling moved and touched and closeness with each other and with each of the three physiological variables and expert-rated communal sharing – but distinctiveness from happiness and sadness. These results support our model.     

Origins of adolescents’ earliest memories

ABSTRACT

This prospective longitudinal study traced changes and individual differences in childhood amnesia over adolescence. A sample of 58 adolescents were followed from age 1-1/2 to age 16 years across 8 timepoints. At ages 12 (n?=?46) and 16 (n?=?51), adolescents completed an early memory interview. Early childhood measures included children’s self-awareness, attachment security, nonverbal memory, verbal memory, language, theory of mind, narrative, and the early reminiscing environment (mothers’ elaborative reminiscing). Adolescents continued to forget their earliest memories over adolescence, such that the age of first memory increased from 40 to 52 months from ages 12 to 16. The sole unique contributor to individual differences in age of earliest memory at both 12 and 16 years was mothers’ elaborative reminiscing, with adolescents recalling earlier memories if their mothers had reminisced more elaboratively with them during early childhood. At age 16, the role of maternal reminiscing was moderated by self-awareness at age 1-1/2. Mothers’ elaborative reminiscing mattered for the age of adolescents’ earliest memories only for children who showed lower levels of self-awareness as toddlers. This pattern suggests a buffering effect for the role of maternal reminiscing in children’s earliest memories, and supports integrated theories of childhood amnesia.