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Vocabulary Chapter 1


the branch of medicine dealing with the diagnosis and treatment of mental disorders


the study of behavior and the mind


the structure of the mind and it's parts


investigates the function of consciousness; this led to the investigation of mental testing and developmental patterns


add up all observations and divide by the number of observations


The middle number in a set of numbers that are listed in order


the observation that occurs most often

hindsight bias

the tendency people have to view events as more predictable than they really are

false consensus effect

the tendency to overestimate the extent to which others share our beliefs and behaviors

random sample

a sample in which every element in the population has an equal chance of being selected

placebo effect

any effect that seems to be a consequence of administering a placebo


..., A graphed cluster of dots, each of which represents the values of two variables

z score

a measure of how many standard deviations you are away from the norm (average or mean)

random assignment

each subject of the sample has an equal likelihood of being chosen for the experimental group of an experiment

statistical significance

a statistical statement of how likely it is that an obtained result occurred by chance

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