Task 1: A psychologist was interested in whether children’s understanding of display rules can be predicted from their age, and whether the child possesses a theory of mind. A display rule is a convention of displaying an appropriate emotion in a given situation.

For example, if you receive a Christmas present that you don’t like, the appropriate emotional display is to smile politely and say ‘Thank you, Auntie Kate, I’ve always wanted a rotting cabbage’. The inappropriate emotional display is to start crying and scream ‘Why did you buy me a rotting cabbage, you selfish old bag?’ Using appropriate display rules has been linked to having a theory of mind (the ability to understand what another person might be thinking). To test this theory, children were given a false belief task (a task used to measure whether someone has a theory of mind), a display rule task (which they could either pass or fail) and their age in months was measured. The data are in Display.dat. Run a logistic regression to see whether possession of display rule understanding (did the child pass the test? – yes/no) can be predicted from possession of a theory of mind (did the child pass the false belief task? – yes/no), age in months and their interaction.xs