PSY 1101 Lecture Notes - Lecture 25: Hindsight Bias, Dependent And Independent Variables, Central Tendency

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1101
• Professor: Brenda Baird

Document Summary

Hindsight bias: is the tendency to believe after learning an outcome that it could have been foreseen. Operational definition: the measure of what is being tested with the theory/hypothesis. Can"t show cause and effect because the researchers are unable to control the variables. Positive correlation (items rise together); negative correlation (one item rises as the other falls) Correlation coefficient describes the strength and direction of a relationship between two variables (+1, 0, -1) Manipulation of one or more factors and controlling of others. Confounding variables are factors other than the independent variable that might produce an effect in an experiment. Experimental group is exposed to the treatment; control group is given a placebo. Independent variable is manipulated; dependent variable is the factor that is measured to see if there are any changes in response to the manipulations. Central tendency (mean, median, mode); variation (range, standard.