A Researcher Wishes to Study the Relationship Between the Level

question 42

Multiple Choice

A researcher wishes to study the relationship between the level of background noise and mental concentration. The treatment (noise level) will have three levels: no noise, low-intensity noise, and high-intensity noise. the subjects are to be divided into three groups, and each group is to receive one of the treatments. He has available to him a set of 60 female volunteers and a set of 90 male volunteers. What experimental design strategy would help him eliminate the introduction of gender as a confounding variable? ​

• A)stratified sampling
• B)replication
• C)blocking
• D)systematic sampling
• E)double-blind trials

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Definitions:

Family System Theory

A theoretical framework that views the family as an emotional unit and uses systems thinking to describe complex interactions within the family.

Behavior

The actions or reactions of an individual in response to external or internal stimuli, often observed and analyzed in psychological contexts.

Roles

The behaviors, obligations, and privileges associated with a social status or position within a group or society.

Family-Centered Approach

An approach in healthcare and education that views the family as an integral part of the decision-making process and support system.