PSYCH 100B Lecture Notes - Lecture 6: Quota Sampling, Simple Random Sample, Internal Validity
Document Summary
Everything you need to know is in the question, don"t overthink. Readings topics not covered in lecture will still be on the exam but not emphasized (just know the gist of it) Chapter 10 material will be covered on the exam. Post questions on discussion forum, don"t email the tas. Questions posted before friday 6pm will be answered by tas. Anything that is not the iv or dv is an extraneous variable. Things related to participants, environment, time of experiment. Extraneous variables are only bad when they become confounding. E. g. everyone in condition 1 studied in the morning, everyone in condition. If sample is small, randomization might lead to an uneven distribution of participants . E. g. test people just in the morning. E. g. randomly assign people the times of day they come in. Participants cannot self select the time they come in (might say something about their.
