We use a natural experiment to show that the presence of an external examiner has both a direct and an indirect negative effect on the performance of monitored classes in standardized educational tests. The direct effect is the difference in the test performance between classes of the same school with and without external examiners. The indirect…

This study analysed the effects of the nonverbal behaviour of an examiner on low and high achievers' psychometric performances. The examiner, who was blind to children's achievement level, varied the nonverbal style she adopted when giving instructions. As expected, a warm style led children to score higher than a neutral one. Moreover, warmth…