A Psychologist Wishes to Determine Whether Drinking Coffee Improves One's

question 8

Multiple Choice

A psychologist wishes to determine whether drinking coffee improves one's mood. The psychologist hangs out at the Café Coffay and asks customers to fill out a 10-point good-mood, bad-mood questionnaire (where 10 = great mood and 1 = bad mood) before and after their first cup of coffee that day. The research question is whether there is any evidence that drinking coffee improves mood. $\begin{array}{lll}&\text { Before Mood Rating }&\text { After Mood Rating }\\\hline \text { Participant 1 } & 5 & 9 \\\text { Participant 2 } & 3 & 8 \\\text { Participant 3 } & 9 & 9 \\\text { Participant 4 } & 3 & 8 \\\text { Participant 5 } & 2 & 7 \\\text { Participant 6 } & 4 & 9 \\\text { Participant 7 } & 1 & 10\\\text { Participant 8 } & 8 & 8 \\\text { Participant 9 } & 6 & 5 \\\text { Participant 10 } & 7 & 7 \\\text { Participant 11 } & 4 & 3 \\\text { Participant 12 } & 3 & 10 \\\text { Participant 13 } & 8 & 7 \\\text { Participant 14 } & 7 & 9 \\\text { Participant 15 } & 5 & 9\\\hline\end{array}$
-The derived t value (either + or -) from the formula is

• A)5.00
• B)7.87
• C)3.44
• D).05

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Definitions:

Self-Reinforcement

The process by which individuals reward themselves for achieving personal or professional goals, reinforcing positive behavior and outcomes.

Stressors

Denotes factors or conditions that cause stress, leading to a range of psychological and physiological responses in individuals.

Favorable Perceptions

Positive interpretations or views held by individuals about something or someone, often influenced by personal beliefs or experiences.

Pay Checks

Regular payments made by employers to employees as compensation for their work.