Task 1: A ‘display rule’ refers to displaying an appropriate emotion in a given situation. For example, if you receive a Christmas present that you don’t like, you should 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?’

A psychologist measured children’s understanding of display rules (with a task that they could pass or fail), their age (months), and their ability to understand others’ mental states (‘theory of mind’, measured with a false-belief task that they could pass or fail). The data are in Display.sav. Can display rule understanding (did the child pass the test: yes/no?) be predicted from theory of mind

(did the child pass the false-belief task: yes/no?), age and their interaction? ③