Abstract
The aim of this paper is to analyze the effect of teacher non-cognitive skills on child outcomes. In this study, the non-cognitive skill in which I focus is conscientiousness and I measure it through the effort that an individual exert in completing a survey. In particular, I approach conscientiousness with two measures: item non-response rate and careless answering. The database that I use is the Millennium Cohort Study (MSC), a longitudinal cohort survey that follows around 19.000 children born in 2000-2001 in UK.