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Research Methods and Statistics in Psychology — HS Psychology practice questions

12 multiple-choice questions and 9 flashcards on Research Methods and Statistics in Psychology, about 8% of the HS Psychology bank. Every one carries a written rationale.

Written and maintained by the CoStudy team · last updated 2026-10-12 · how we write and review questions

What this chapter covers

Research Methods and Statistics in Psychology is one of 13 chapters in CoStudy's HS Psychology bank, and it holds 12 of the bank's 150 multiple-choice questions — roughly 8% of the total. That proportion is not arbitrary: chapters follow the certifying body's published exam outline, and the number of questions in each is set by that domain's published weight, so the share of your practice time this chapter takes matches the share of the real exam it accounts for.

Studying by chapter is worth doing once you have a diagnostic score. A single overall percentage tells you whether you are close; it does not tell you which domain is dragging. Working a weak chapter in isolation, and re-testing it in isolation, is the fastest way to move a score that has stalled — and it is why the mock exams in CoStudy report by domain rather than as one number.

Free Research Methods and Statistics in Psychology practice questions

3 questions drawn from this chapter, with the full rationale shown — the controlling principle behind the right answer, and why each wrong option tempts and fails.

In an experiment testing whether caffeine improves memory, the amount of caffeine given is the:

  1. independent variable
  2. dependent variable
  3. confounding variable
  4. control group

Answer: A — independent variable

A) Correct — The independent variable is what the researcher deliberately changes. B) Is the memory score being measured. C) Is an unplanned factor that changes along with the independent variable. D) Is the group that gets no caffeine or a placebo.

In a double-blind study:

  1. only the participants are unaware of their group
  2. neither participants nor experimenters know group assignments
  3. participants are told the true purpose afterward
  4. two researchers score the same data separately

Answer: B — neither participants nor experimenters know group assignments

B) Correct — Hiding the assignment from both sides prevents expectations from shaping the results. A) Is a single-blind study. C) Is debriefing. D) Is a reliability check, not blinding.

Which does the APA require for research with human participants?

  1. a ban on all deception
  2. payment for every participant
  3. informed consent
  4. publishing participants' names

Answer: C — informed consent

C) Correct — Participants must agree to take part knowing what is involved, and can quit at any time. A) Deception is allowed when justified and followed by debriefing. B) Payment isn't required. D) Confidentiality is required.

Research Methods and Statistics in Psychology flashcards

4 cards from the 9 in this chapter.

Random sampling vs random assignment?

Sampling: who's in study. Assignment: who gets treatment.

Independent vs dependent variable?

IV: manipulated. DV: measured.

APA ethical principles?

Beneficence, fidelity, integrity, justice, respect.

Scientific method in psych?

Hypothesis → experiment/observation → analyze → conclude → replicate. Empirical, peer-reviewed.

Practise the full chapter

These are a sample. The full Research Methods and Statistics in Psychology chapter runs 21 items with per-chapter progress tracking, on the web and in the iOS app.

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Other HS Psychology chapters

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