PSYC 2911 Midterm: Psych 2911 midterm 1 notes.docx

• School: Memorial University
• Department: Psychology
• Course: PSYC 2911
• Professor: Dr.Ian Neath

Document Summary

Null hypothesis: assumes the absence of a difference, use two tailed tests unless you have a compelling reason to use a one tailed, easy to disprove a negative assertion, if z= +2. 50, reject h0, if z= +1. 25, cannot reject h0, four outcomes: Operationally define the iv: e. g. crowded, what is defined as crowded, can have more than 1 iv and more than 2 levels, but 1 iv and 2 levels is the simplest design, e. g. Measuring the effect of a pretest/ solomon four group design: compare 1 to 2 and 3 to 4 can let you see if the pretest makes a difference, you manipulate whether or not there"s an effect of a pretest, can examine control differences to see if it affects the variable, horizontal lines compare control to experimental when neither/both have pretest, vertical lines indicate tests to see if pretest can change posttest.