PSY 105 Lecture Notes - Lecture 2: Francis Bacon, Karl Popper, Tanning Bed
31 Jan 2016
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Population the entire group of interest to researchers. Sample a portion of any population that is selected for the study. Random selection randomly choosing a sample from a population. Sampling bias choosing a sample that does not represent your population. An intensive study of 1 or 2 people. Advantages: cannot generalize results to all people. Disadvantages: hawthorne effect, can study things that are too unethical for an experiment or that. Disadvantages: can collect a lot of data quickly (e. g. , online survey, sometimes people don"t tell the truth. Examines how one variable causes another variable to change. Disadvantages: can establish cause and effect, might not be generalizable to real-world situation (outside of lab) Two kinds of important variables in an experiment: independent variable (iv) the variable that you manipulate. What the researcher changes to see what happens: dependent variable (dv) the outcome variable that the researcher measures to see if changes in the iv affect it.
