Simplify the Expression

question 267

Multiple Choice

Simplify the expression. Work inside parentheses first, and then divide out common factors.

---

Definitions:

Order Effects

Order effects refer to changes in participants' responses in experiments caused by the order in which experimental materials, tasks, or conditions are presented.

Repeated Measures

A research design in which the same participants are measured more than once under different conditions or over time.

Criterion Variables

The dependent variables in research studies that are predicted or explained by independent variables.

Practice Effect

Improvements in performance on a task or test due to repeated testing rather than actual changes in ability or knowledge.