KP290 Lecture Notes - Lecture 11: Muscle Biopsy, Operational Definition, The Techniques
21 Feb 2017
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Define the variables conceptually and operationally: variables, any event, situation, behaviour, or individual characteristic that varies, what we want to observe/study, types of variables revisited. Independent i. what the researcher is manipulating ii. also called treatment or experimental variable iii. e. g. , two different programs to teach reading. the effect or observed measure i. e. g, reading success: manipulating the independent variable. groups must be sufficiently different i. 1 vs 5 days of exercise/wk comparison. straightforward or concealed: ethic issues, measuring the dependant variable. should this measurement be done: operational definition of variables, e. g. , muscle biopsy on children. The techniques the researcher uses to measure the variable: concept measurement. One of the biggest considerations in a study. does the amount of caffeine one drinks per day when manipulated by the researcher affect sleep: both correlation and causation variables can be graphed. place the variable you identify as the cause on the x (horizontal) axis. place the variable you identify as the effect on the y (vertical) axis.
