Thursday, April 9, 2009

Psychology GRE Study Guide Page 11

I’m too lazy to link all of the previous pages, but you can find them in the archives and under the label “GRE”. Page 1 has a link to the official Practice GRE from which this guide is developed.

76. Correlation coefficients range from -1 to 1. A correlation coefficient of 0 indicates no correlation (this would look like a random scatter plot). Positive correlations indicate both measures increase together, while negative correlations indicate the dependent variable decreases while the independent variable increases, or vice-versa. The absolute value of the coefficient indicates the strength of the correlation. See earlier question regarding correlations: Page 2, #15.

77. The phi phenomenon is the experience of movement when stationary lights are flashed in succession (like neon signs with blinking lights).

78. Attitude is composed of three components – cognitive, affective, and behavioural. The behavioural component is predispositional; attitudes may not always directly affect behaviour. The correlation between attitude and behaviour is small. In order for attitudes to be predictive they must be specific to the behaviour; attitudes towards birds does not predict if Cameron will kill the pigeon. For those of you not following the S.C. Chronicles, another example is attitudes towards health does not predict if a person will stop eating gummy bears. Attitudes are more predictive of behaviour when people have a strong interest in the issue, when people are under pressure of time, and when situational cues direct attitude. But remember, despite these facts, specificity is a requirement, while the other factors are not.

79. I am not about to delve into the history of psychology, but for those of you who want the extra point, this site has an easy to read timeline.

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