PSYB01H3 Chapter Notes - Chapter 7: Null Hypothesis, Analysis Of Variance, Statistical Hypothesis Testing
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Factorial designs- disentangle both direct and interactive influences on measured responses: involves just one variable, more realistic, more efficient. Multifactorial for experiments that vary two or more independent variables and provide direct tests of the main effects of each independent variable as well as the interaction effects between and among the independent variables. Single-factor experiment, a researcher can always add a new level to an existing independent variable, as for example when a baseline, no-treatment group is incorporated into the study design. Multifactorial experiment, an altogether new independent variable is devised and incorporated into the research design. Lowe, hirsh, and anderson illustrates a multifactorial design with two independent variables. 3 (played by hubert lewis), and for a sad mood, they listen y to prokofiev"s. Advantages to a multifactorial research design: more realistic, economical and efficient design to evaluate and to test the separate and joint influences of one or more independent variables on a dependent variable.
