When measuring the dependent variable prior to the independent variable causes participants to respond differently to the independent variable than they would have otherwise, _______ has occurred.
a. attrition
b. pretest sensitization
c. history
d. a carry-over effect
e. a selection threat to validity
Question 2
Single-case experiments are desirable when a researcher
a. wants to assess therapeutic or intervention techniques.
b. the behaviors being studied are common to many people.
c. does not want to gather extensive information about a person or a phenomenon.
d. believes that there is a strong possibility that the results will be influenced by cohort effects.
A cross of sweet peas showing that independent assortment does not always occur
Measuring Limb Circumference
Measuring Pediatric Vital Signs
Measuring a child’s height with a measuring stick
Variable penetrance of mitochondrial mutations
Energy flow in the light-dependent reactions of photosynthesis