PSYCH-101 Lecture Notes - Lecture 2: Membrane Potential, Psych, Neuroglia
30 Oct 2020
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Experimental researcher manipulates one or more independent variables, measures effect on dependent variables. Experimental researcher is able to keep extraneous factors constant. Internal validity the degree to which an experiment supports clear causal conclusions (if experiment is well-designed and properly conducted) Confounding of variables two variables are intertwined in such a way that we cannot determine which one has influenced a dependent variable (music does not affect ability to do a test, but mood resulting from music does) Demand characteristics cues that participants pick up about the hypothesis of a study or about how they are supposed to behave. Experimenter expectancy effects subtle and unintentional ways in which experimenters influence their participants to respond in a manner that is consistent with the hypothesis. Double-blind procedure participant and experimenter are kept blind as to which experiment condition the participant is in (both patient and doctor are unaware of whether patient received drug or placebo)
