A Psychologist Wishes to Determine Whether Short-Term Memory Scores Are

question 19

Multiple Choice

A psychologist wishes to determine whether short-term memory scores are affected by the type of medication in hyperactive children. Sixty hyperactive children (30 boys and 30 girls) were randomly assigned to receive either Cylert or Ritalin (two kinds of amphetamines that are central nervous system stimulants) . Their short-term memory was tested on a 20-point scale (where 0 = no memory and 20 = perfect memory) . $\begin{array} { c c c c c c } \hline & \text { Boys } & && { \text { Girls } } \\\hline \text { Cylert } & \text { Placebo } & \text { Ritalin } & \text { Cylert } & \text { Placebo } & \text { Ritalin } \\\hline 12 & 5 & 3 & 5 & 4 & 12 \\10 & 6 & 2 & 6 & 6 & 9 \\13 & 7 & 5 & 2 & 7 & 14 \\10 & 6 & 6 & 4 & 6 & 13 \\9 & 4 & 1 & 3 & 5 & 9 \\12 & 5 & 4 & 2 & 4 & 12 \\13 & 6 & 2 & 4 & 5 & 8 \\10 & 7 & 6 & 6 & 6 & 15 \\11 & 5 & 1 & 2 & 7 & 12 \\12 & 7 & 5 & 4 & 7 & 11 \\\hline\end{array}$
-The q value at p = .05 for Tukey's HSD test for the main effect for drug levels is

• A)3.44
• B)4.37
• C)3.79
• D)4.70

---

Definitions:

Revolution Generation

A concept or term sometimes used to describe a cohort of individuals who are perceived as being involved in making significant societal changes or technological advances.

Baby Bust

A period marked by a significant decrease in birth rates.

Generation X

Generation X refers to the demographic cohort born approximately between the early 1960s and late 1970s, known for its adaptability, skepticism towards institutions, and bridging the gap between traditional and digital technologies.

Baby Boomers

A demographic group born approximately between 1946 and 1964, known for being a large generation with significant economic and cultural impact.