A Medical Journal Published the Results of an Experiment on Insomnia

question 76

Multiple Choice

A medical journal published the results of an experiment on insomnia. The experiment investigated the effectsof a controversial new therapy for insomnia. Researchers measured the insomnia levels of 40 adult women whosuffer moderate conditions of the disorder. After the therapy, the researchers again measured the womenʹsinsomnia levels. The differences between the the pre- and post-therapy insomnia levels were reported. Whattype of experimental design is this?

• A) matched-pairs design
• B) completely randomized design
• C) randomized block design
• D) single-blind design

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Definitions:

Affordances

The possibilities for action offered by objects and environments, emphasizing the relationship between the physical properties of an item and the user.

Direct Perception

A concept in psychology and ecological psychology proposing that the environment offers rich information, allowing for immediate perception without needing significant cognitive processing.

Perception and Action

The interplay between how we perceive our environment and how we respond to it through movement.

Affordances

The properties of objects or environments that allow individuals to perform actions on them.