PSY 301 Lecture Notes - Lecture 3: Type I And Type Ii Errors, Random Assignment, Sleep Deprivation
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Variable: something that varies or can take on different values. Levels: values that a variable takes on. Constant: potential variable that is kept at a single level. Example: 80% of college students have been depressed in the last year of school. Assert that the value of one variable varies systematically with the value of another variable. Example: heavy cell phone use tied to poor sperm quality. Argue that one variable is responsible for changing another variable. Covariance: x and y are correlated or associated. Internal validity: we can eliminate other possible causes that may be confounded with x. They were manipulated based on which knowledge they were given, and then the food chosen was measured. How well the participants and conditions in the study represent the larger populations and contexts of interest. How accurate and reasonable the statistical conclusions are. Type 1 error (false positive), type ii error (miss) Eliminating alternative explanations for a casual relationship between two variables.
