Learned irrelevance and retrospective correlation learning

In 1973 Mackintosh reported an interference effect that he called learned irrelevance in which exposure to uncorrelated (CS/US) presentation of the unconditional stimulus (US) and the conditioned stimulus (CS) interfered with future Pavlovian conditioning. It has been argued that there is no specific interference effect in learned irrelevance; rather the interference is the sum of independent CS and US exposure effects (CS + US). We review previous research on this question and report two new experiments. We conclude that learned irrelevance is a consequence of a contingency learning and a specific learned irrelevance mechanism. Moreover even the “independent exposure controls”, used in previous experiments to support the CS and US exposure account, provide support for the correlation learning process.     

Young Children's Theory of Mind and Emotion

Abstract

In three experiments, children aged 3 to 7 years were tested for their understanding of the impact of beliefs and desires on emotion. Children watched while animal characters were offered various types of container and then predicted their emotional reaction. In Experiment 1, the children (but not the characters) knew that the desirable contents of each container had been removed. The majority of 6-year-olds and a minority of 4-year-olds understood that the characters would be happy with the gift, given their mistaken belief about its contents. In Experiment 2, characters were given containers apparently containing an object they wanted but really containing an object they did not want, or vice versa. Predictions of emotion based on both the desire and the mistaken belief of the characters increased with age. In Experiment 3, characters were given closed containers that might or might not contain an item they wanted. Both 3-and 5-year-olds grasped that the characters' emotional reaction would depend on both their (unconfirmed) beliefs and desires about its content.

The experiments show that preschool children deploy a theory-like conception of mind in predicting emotional reactions. They understand that the emotional impact of a situation depends not on its objective features but on the beliefs and desires that are brought to it.