The ability to detect a change, to accurately assess the magnitude of the change, and to react to that change in a commensurate fashion are of critical importance in many decision domains. Thus, it is important to understand the factors that systematically affect people's reactions to change. In this article we document a novel effect: Decision…

Infants aged 4 and 6 months were presented with events in which a person acted so as to set another person, or an inanimate object, in motion. In one condition, the actor spoke to the person (natural) or inanimate object (unnatural); in the other condition, the actor grasped and manipulated the person (unnatural) or object (natural). Six-month-old…

Research supported by the National Research Council (Grant APA-179) and the Medical Research Council of Canada (Grant MA-2653).

Research is presented that is derived from the hypothesis that a person's interpretation of emotional stimulus is affected by the painted hue and the light intensity of the visual environment. The reported experiment proved in part a null hypothesis; it was suggested that, within the considered variables of the experiment, either a person's…