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PSYC 1010
Julie Dowsett

Psychology1010 Oct 2, 2013 Self-fulfilling prophecy: because you have this belief about the other person and so you behave toward them in a certain way as a result of your belief or expectation. Your behaviour will affect the behaviour of the other person. This person will behave in a certain way that will confirm your expectations. Experimenter bias: the experimenter has a certain expectation, you expect the subject to behave a certain way. You may be behaving toward the subject in a way that they pick up on it and will behave in that way. To minimize this from happening: minimize contact/interaction with the subject experimenter is blinded and subject is blind- double blind procedure Statistics 1. descriptive statistics-describe the characteristics of your data -measures of central tendency: is there one number that best describes the middle score in a wide array of scores (mean, median, mode) -variability-how much scores spread out from the mean (range-difference between the highest and lowest score in your distribution score; standard deviation-measures the average spread of scores (deviation from the mean), it takes into account all scores in the distribution and not just the highest and lowest. the greater the variability or spread of scores the higher the SD -normal distribution (bell curve): important in psychology because (a) most psychological variables are normally distributed; (b) it provides a precise way of determining how people compare to one another; mean, mode, median are all equal, it is symmetrical 2. inferential statistics-provide us with a way of determining how much confidence we can have in results obtained from samples by telling us how likely it is that results are due to chance alone -if results are <0.05 then results are real; above 0.05 they are due to chance--> if the results are real they are statistically significant Biopsychosocial approach: uses different levels
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