Unit 1: Introduction - Practice Quiz

1 What is the main purpose of psychological research?

2 Which feature is essential to scientific psychological research?

3 A researcher who studies memory is investigating which area?

4 What does a research question identify?

5 What is a variable?

6 What is a constant in research?

7 In a study, all participants complete the test in the same room. The room is being treated as a:

8 Which example is a variable?

9 Which type of research is mainly designed to increase basic knowledge?

10 Which type of research focuses on solving practical problems?

11 Research that describes behaviors without manipulating variables is usually called:

12 Which type of research involves manipulating one variable to study its effect on another?

13 A study examining the relationship between stress and sleep is an example of:

14 Why is research important in psychology?

15 What is the main purpose of statistics in psychological research?

16 Which activity uses descriptive statistics?

17 Statistics can help a psychologist determine whether a result is likely due to:

18 In an experiment, the variable manipulated by the researcher is the:

19 The variable measured as an outcome in an experiment is the:

20 Which is an example of a qualitative variable?

21 A psychologist wants to determine whether brief mindfulness training reduces test anxiety. Which plan best represents psychological research?

22 A researcher repeats a study on memory using a new sample but the same procedures. What is the main purpose of this approach?

23 A study finds that students who sleep longer tend to report lower stress. Why should the researcher avoid concluding that sleep directly causes lower stress?

24 A researcher defines anxiety as the score obtained on a validated anxiety questionnaire. This definition is an example of what?

25 In an experiment, all participants complete the task in the same room at the same temperature. Room and temperature are best classified as what?

26 A study examines whether background music affects reading comprehension. Participants receive either music or silence, and comprehension is measured afterward. What is the dependent variable?

27 A researcher studies whether caffeine improves reaction time but allows participants to choose their own caffeine condition. What problem is most likely introduced?

28 A researcher measures the relationship between age and social media use among adults. Which statement correctly identifies the variables?

29 A researcher keeps the number of practice trials exactly equal for every participant. If the number is fixed at 10, it is best described as what?

30 A psychologist investigates how children describe friendship by conducting open-ended interviews without manipulating any condition. What type of research is this primarily?

31 A researcher randomly assigns participants to receive either a cognitive training program or a control activity. Which feature makes this an experiment?

32 A school introduces a counseling program in one existing classroom and compares its outcomes with another existing classroom. Why is this likely quasi-experimental research?

33 A survey shows that greater academic motivation is associated with more hours of studying. Which type of research design best describes this study?

34 A psychologist observes aggressive behavior among children on a playground without interacting with them or changing the setting. This is an example of what?

35 A clinical psychologist compares average symptom scores for two treatment groups. Which role of statistics is most directly involved?

36 A researcher reports that a new therapy reduced average depression scores, but the difference was small and inconsistent. What should statistics help the researcher evaluate?

37 Why is psychological research important when developing an educational intervention?

38 A study records participants' blood type as A, B, AB, or O. What type of variable is blood type?

39 Participants rate their satisfaction as dissatisfied, neutral, satisfied, or very satisfied. What type of variable is this rating?

40 A researcher records the exact number of panic attacks each participant experienced during the previous month. This measure is best classified as what?

41 A researcher observes that students who sleep longer report less anxiety, but measures sleep and anxiety only once. Which conclusion is most defensible?

42 Which feature most clearly distinguishes psychological research from an informal personal observation?

43 A study finds that a brief intervention improves test performance only among participants with high baseline anxiety. Which interpretation best reflects a research-level conclusion?

44 A researcher changes the wording of instructions and observes changes in conformity while holding group size constant. In this design, the wording of instructions is best classified as the:

45 In a memory experiment, all participants complete the task in the same room at the same temperature. What is the most precise classification of room temperature in this study?

46 A study examines whether caffeine affects reaction time, but participants choose whether to consume caffeine. Caffeine consumption is best described as a:

47 A variable has different values across participants but is deliberately excluded from the statistical model because it is unrelated to the hypothesis. Which statement is most accurate?

48 A researcher studies whether therapy type predicts depression scores and statistically adjusts for participants' baseline depression. Baseline depression is most appropriately treated as a:

49 Which design provides the strongest basis for a causal claim that a mindfulness program reduces stress, assuming adequate implementation and measurement?

50 A researcher wants to understand how adolescents describe loneliness before developing a questionnaire. Which approach is most suitable initially?

51 A psychologist combines results from 25 independent studies of cognitive-behavioral therapy and calculates a weighted overall effect. This is primarily:

52 A researcher compares naturally occurring age groups on executive functioning at one point in time. Which limitation is especially central to this design?

53 A researcher follows the same children from age 6 to age 18 to examine changes in self-regulation. This design is best classified as:

54 A treatment group improves by 8 points and a control group improves by 6 points on a large-sample anxiety scale. Which conclusion is most appropriate without additional information?

55 Why can statistical significance alone be misleading when evaluating a psychological intervention?

56 A correlation between social-media use and loneliness disappears after controlling for social isolation. Which interpretation is most cautious?

57 A psychological scale produces nearly identical scores across repeated administrations but fails to measure the intended construct. Which description is most accurate?

58 A participant's diagnostic category is coded as , , and for three disorders. What is the measurement level of this variable if the codes are merely labels?

59 A researcher records satisfaction as dissatisfied, neutral, satisfied, and very satisfied. The categories are ordered, but equal spacing cannot be assumed. This variable is:

60 Reaction time is measured in milliseconds, with equal intervals and a meaningful zero representing no elapsed time. It is best classified as: