It is a common finding that young children will express affective preference for short-term novelty. However, it is often not clear whether this is because they like the novelty or dislike the familiarity, or both. In this study, novel and familiar pictures were presented for binary choice under one instructional condition per group of subjects - either to indicate which one they liked or which one they did not like. The children liked the novelty but failed to ‘not like’ the familiarity. The results pose the problem of why the two affective expressions failed to act as opposites.