SOC200H1 Chapter Notes -Computer-Assisted Telephone Interviewing, Survey Data Collection, Telephone Directory
Document Summary
3 major components: independent and dependent variable. Iv = dichotomous variable (present or not) History during experiment historical events may occur, confound experimental results. Use to contract between results in dependent variable. Participants grow tired, sleepy, bored, hungry, etc. Variables must be operationally defined: pretesting and posttesting. Pretest measure dependent variable in subjects before stimulus (iv) exposure. Posttest remeasure dependent variable in subjects after. Ex. low score, can only get better or stay the same, can"t stimulus (iv) exposure: experimental and control groups. Experimental groups group of subjects administered experimental stimulus. Control group resemble experimental group closely except not administered stimulus. Hawthorne effect any impact of research on the subject of study i. e. unintended effects. Double blind experiment neither the subjects nor the experiments know which is control group vs. experiment group. Probability sampling select 2 probability samples represent of total pop: do so using a sampling frame, 2 groups must resemble each other, seldom used.
