An Experimenter Finds That Students in a Morning Class Perform

question 80

Multiple Choice

An experimenter finds that students in a morning class perform better on a math test after being taught with a new teaching method compared with students in an afternoon class who are taught with a standard teaching method. He concludes that the new teaching method is superior to the old method. The main problem with this experimenter's conclusion is:

• A) he did not find a random sample of participants.
• B) he did not consider the importance of external validity.
• C) he did not consider the possible influence of participant bias.
• D) he did not consider the time of day that students were being taught.

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Definitions:

Post-Traumatic Stress

An emotional and mental disorder resulting from living through or seeing a distressing event, leading to persistent flashbacks, nightmares, and overwhelming worry.

Social Phobias

Intense, persistent, and irrational fears of social or performance situations where embarrassment may occur, leading to significant anxiety and avoidance behavior.

Specific Phobias

Intense, irrational fears of specific objects or situations, significantly impacting an individual's daily life.

Somatoform Disorder

A mental disorder that causes individuals to experience physical symptoms that have no identifiable physical cause, believed to be linked to psychological factors.