PSY 290 Midterm Exam, Questions with Answers (All 100% Correct)

Variations in room temperature or noise level, aversive odors in the lab space, and poor lighting are examples of ________ variables. Selected Answer: independent Answers: nuisance dependent independent participant • Question 2 0 out of 2 points When a dependent variable produces consistent measurements, it is said to be Selected Answer: valid Answers: sequential valid reliable hypothetical • Question 3 2 out of 2 points Blood sugar levels rise and fall in response to various factors including when one last ate. Dr. Jones wants to measure participants’ glucose levels over the course of a two-week treatment protocol. She arranges for participants’ blood to be drawn every morning, between 6:00 a.m. and 8:00 a.m., before the participants consume breakfast. She is exerting which type of control? Selected Answer: Constancy Answers: Randomization Constancy Elimination Random assignment • Question 4 2 out of 2 points In a study investigating relaxation and anxiety among 20-year-old females, participants are randomized to receive a relaxation exercise or no treatment. Anxiety is measured on a five-point scale from “no anxiety” to “extreme anxiety.” Which of the following is an extraneous variable that could contain two or more values? Selected Answer: Severity of anxiety prior to the treatment Answers: Age of the participants The anxiety scale Severity of anxiety prior to the treatment Severity of anxiety after the treatment • Question 5 2 out of 2 points Sequence effects and carryover effects are controlled using Selected Answer: counterbalancing Answers: counterbalancing balancing elimination randomization • Question 6 2 out of 2 points A college student enrolls in an Introduction to Psychology course. The syllabus states that all students must participate in research conducted by psychology faculty or complete a comparable, alternative assignment. The policy creates _________ for researchers. Selected Answer: convenience sampling Answers: quantitative studies random sampling replication studies convenience sampling