Asked by Martin Murgoski on May 18, 2024
Verified
Dr Mokoena believes that people who are under stress will develop more colds than people who are not under stress. When she randomly selects 10 participants and exposes them to high levels of stress, she finds that 9 of the participants develop colds. Based on these results she concludes that stress causes an increase in colds. Dr Mokoena's reasoning may be flawed because in this study
A) there was no dependent variable in her study.
B) there was no control group for comparison.
C) she didn't formulate a hypothesis before she collected her data.
D) she didn't measure the independent variable when the study ended.
Control Group
In experimental research, a group of subjects that is not exposed to the treatment being tested, serving as a benchmark to measure the effects of that treatment.
Dependent Variable
The variable in an experiment that is measured or tested by the researcher to see if it is affected by changes in another variable (the independent variable).
Stress
A physical or psychological response to internal or external pressures or threats, often characterized by feelings of tension, worried thoughts, and physical changes like increased blood pressure.
- Understand the moral considerations and methodological strictness necessary in conducting psychological experiments.
Verified Answer
Learning Objectives
- Understand the moral considerations and methodological strictness necessary in conducting psychological experiments.
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