PSYC3016 Lecture Notes - Lecture 14: Dependent And Independent Variables, Medical Optical Imaging, Object Permanence
Document Summary
Challenges of studying infants: cant talk, cant follow instructions, short attention span, limited behaviour repertoire, develop rapidly, so different tasks need to be used at different stages. Dependent variables: sucking, head turning, reaching, looking time, surprise: physiological task. Dependent variables: heart rate, event related potentials, hemodynamic response (fmri, optical imaging) Habituation: looking time: time reaction, looking at demonstration or looking around the room. First uses of habituation: test of perceptual discrimination. More complex model of looking time: start off with maximum interest and get bored after exposure, there is a period after initial exposre, your interest increases to something you"ve seen before. Infants are trying to figure out what"s going on: more complicated stimuli, takes longer. They don"t care about the face: condition 3: didn"t habituate to novel face. If can learn, they will generalise and stay bored at novel stimulus.
