Answer:
confounding variable; lowered.
Explanation:
In the field of statistical analysis, a <u>confounding variable</u> is one that influences both the independent variable and the dependent variable. When an experimented is designed, the researcher wants to study the effect the independent variable has on the dependent variable. However, if there's a third variable that can influence them, it can cause a spurious correlation.
The psychologist wanted to test the effects using the new computer program (independent variable) had in helping students learn math (dependent variable). But when she divided the group in two, separating them by gender, she introduced a third variable (confounding variable) that wasn't accounted for when designing the experiment and that can influence either variable. <u>Because of this, the internal validity of the study has been </u><u>lowered</u><u>.</u>
In ancient Egypt, iron was known to be "the metal from heaven" . Iron was often used in tools, weapons, jewelry, and other fine items associating iron with power and royalty.
An sample advertisement could have been something along the lines of, "Treat yourself like a deity and drape yourself in the metal from heaven".
Answer:
In a shuttle avoidance procedure involving the stimuli of tone and shock, the ______ serves as the sd for the ______ response.
b) shock; escape
