PSY 301 Lectures 7 Questions with Detailed Verified Answers (100% Correct Answers) /Already Graded A+

1 Exampromax - Stuvia US 2025/2026


PSY 301 Lectures 7 Questions with Detailed
Verified Answers (100% Correct Answers)
/Already Graded A+
Single-Variable Experiment
Ans: - Any experimental design with a single IV (i.e. the effect of the IV on
the DV)
- AKA single-factor design
- Factor = variable
- Two types: 1. Two-level design 2. Multilevel design
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Two-Level Designs
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Ans: Study with one IV that has exactly two levels
Can be between- or within-subjects

Two-Level Designs Example
Ans: Examine the effects of anxiety on test performance
- IV = anxiety, level 1 = low anxiety, level 2 = high anxiety
- DV = test performance as measured by a standardized test score

Two-Level Designs: Analysis
Ans: - t-test: compares mean differences between two groups
- Independent samples t-test: groups are independent of each other
- Paired samples t-test: matched groups or repeated measures

Two-Level Design: Plotting
Ans: - Displayed on a means plot
- IV on the X-axis and DV on the Y-axis

Two-level Design: Write-Up