HSP Research and Scientific Foundations 1

Question 1

What is the purpose of a control group in experimental research?

Accepted Answer

To provide a baseline for comparison

Answer

In experimental research, a control group is a group of participants who do not receive the experimental treatment or intervention. Their data serves as a baseline against which the experimental group's results are compared. This allows researchers to determine if the intervention had a significant effect, isolating the impact of the independent variable from other factors.

Question 2

What type of research design allows for cause-and-effect conclusions?

Accepted Answer

Experimental design

Answer

Experimental design is the only research design that allows for cause-and-effect conclusions. This is because it involves the manipulation of an independent variable, random assignment of participants to control and experimental groups, and control over extraneous variables. These elements ensure that any observed changes in the dependent variable can be confidently attributed to the independent variable.

Question 3

Which statistical test is appropriate for comparing the means of two groups?

Accepted Answer

T-test

Answer

A T-test is a statistical test specifically designed to compare the means of two groups. It determines if the observed difference between the two group means is statistically significant or likely due to chance. This makes it appropriate for scenarios where researchers want to assess if two distinct populations or conditions have different average outcomes.

Question 4

What is internal validity?

Accepted Answer

Confidence in cause-effect relationships

Answer

Internal validity refers to the extent to which a study can confidently establish a cause-and-effect relationship between its variables. It addresses whether the observed effects are truly due to the independent variable and not to confounding factors. High internal validity means there are minimal alternative explanations for the study's findings.

Question 5

Which term refers to the consistency of a measurement tool?

Accepted Answer

Reliability

Answer

Reliability refers to the consistency and stability of a measurement tool or method. A reliable tool produces similar results under the same conditions when measurements are repeated. This ensures that the data collected is dependable and not subject to random error or fluctuation.

(HSP) Certified Health Service Psychologist Practice Test

(HSP) Certified Health Service Psychologist Practice Test

HSP Research and Scientific Foundations 1