This data set was collected on sixty-four children, recruited from five schools in London, UK. Children ranged in age from 8.82 years to 11.40 years of age (M =10.23; SD =.67, 73.4% girls), which relates to the end of Year 4 (n = 10), Year 5 (n = 24), or the beginning of Year 6 (n = 30). Please see the Methods section of the paper for more information on the tasks and scoring procedures.