DrFletcher Is Interested in Whether Joining a Fraternity/sorority Causes People

question 6

Multiple Choice

Dr.Fletcher is interested in whether joining a fraternity/sorority causes people to become more concerned about their attractiveness and appearance.He recruits a group of 55 freshmen
(25 males,30 females) who are planning to go through fraternity/sorority recruitment on his campus.After they join,he gives them a measure of attractiveness concern/appearance concern (the Body Concern Scale) .

-In addition to measuring the group of participants who joined a fraternity/sorority,Dr.Fletcher decides to give the same measure to another group of 55 participants who decided to not join a fraternity/sorority.After conducting the study,Dr.Fletcher finds out that the people who joined a fraternity/sorority all saw a documentary on body image sponsored by the InterGreek Council the night before recruitment began.This threat to internal validity is known as a:

• A)Selection threat
• B)Selection-history threat
• C)History threat
• D)Testing threat

---

Definitions:

Illusory Promise

A statement that appears to be a promise but is too vague or lacks the requisite commitment to be legally enforceable as a contract.

Promissory Estoppel

A legal principle that prevents a promisor from arguing that an underlying promise offered should not be legally upheld if the promisee has relied on that promise to their detriment.

Unilateral Contract

A type of contract in which only one party makes a promise to perform in exchange for an act by the other party.

Promissory Estoppel

A legal principle that prevents a party from retracting a promise when the other party has reasonably relied on that promise to their detriment.