Figure: A Researcher Was Interested in Developing a Reliable and Valid

question 65

Essay

Figure:
A researcher was interested in developing a reliable and valid measure of friendliness.That is,she wanted to distinguish between friendly and unfriendly people using her questionnaire.To determine whether she developed a good measure (called "Friend"),she administered her "Friend" questionnaire to a group of 300 people twice (Friend-Time1 and Friend-Time 2),separated by six months.At the second testing session she also administered a similar questionnaire called "Nice," which previous research has shown to be a valid measure of people's ability to get along with people and to make friends.She also administered a questionnaire designed to measure art ability,which she predicted to be unrelated to friendliness.She observed the following correlations among the measures:
-What correlation coefficient value indicates the "Friend" measure has good discriminant validity?

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Definitions:

Nuclear Receptor

A class of proteins within cells that are responsible for sensing steroid and thyroid hormones and other molecules.

mRNA Synthesis

A process where a messenger RNA (mRNA) strand is created from a DNA template, which serves as a guide for protein synthesis in cells.

Lipid Synthesis

Lipid synthesis is the biochemical process by which cells produce lipids, which are fats and oils crucial for cell structure, energy storage, and signaling.

Intracellular Mediator Molecules

Intracellular mediator molecules are substances within cells that transmit signals from receptors to target molecules, involved in various biochemical pathways.