Short Answer

A clinical researcher wants to test if a new computer-based training program reduces attention-deficit symptoms in a single child. The researcher plans to measure the child's objective screen-focus time in minutes each day, systematically turning the training program on and off across different weeks. State whether the researcher should design this as a case study or a single-subject research study, and briefly justify your answer in 1-3 sentences.

Question: A clinical researcher wants to test if a new computer-based training program reduces attention-deficit symptoms in a single child. The researcher plans to measure the child's objective screen-focus time in minutes each day, systematically turning the training program on and off across different weeks. State whether the researcher should design this as a case study or a single-subject research study, and briefly justify your answer in 1-3 sentences.

Sample answer: The researcher should design this as a single-subject research study. This is because the design involves strict experimental manipulation and control (turning the program on and off) to measure objective behavior (screen-focus time in minutes) to yield structured data for quantitative analysis.

Key points:

  • Identify the design as a single-subject research study.
  • Justify the choice by referencing the strict experimental manipulation and control (switching the program on/off).
  • Justify the choice by pointing out the focus on measuring objective behavior (minutes of screen-focus time) for quantitative analysis.

Rubric: Responses must state that the study is a single-subject research design and justify it by mentioning the presence of experimental manipulation (turning the program on and off) and the measurement of objective behavior (screen-focus time in minutes) analyzed quantitatively.

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Updated 2026-05-26

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Research Methods in Psychology - 4th American Edition @ KPU

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