Suppose You Are Planning a Study Involving Four Groups, and You

question 49

Short Answer

Suppose you are planning a study involving four groups, and you expect a medium effect size (use the .05 level of significance). For 80% power, how many participants would you need for each group?

---

Definitions:

Cross-sectional Intelligence

An approach to studying intelligence that involves assessing different age groups at one point in time to understand changes or stability in intelligence across the lifespan.

Younger Generations

Refers to the demographic groups that are younger in age, typically following the current oldest generation.

Chronological Age

The precise number of years someone has lived, calculated from their birth date to today's date.

Specific Genes

Distinct and identifiable genes within an organism's DNA that serve particular functions or contribute to certain traits.