Question 1

If uncontrolled, extraneous variables become ___ variables.

Accepted Answer

confounding

Question 2

An independent variable that is manipulated by the researcher and assigned is called an ___ variable.

Accepted Answer

active

Question 3

Experimental research is often referred to as a ___ Trial, ___ Trial, ___ Clinical Trial, or ___ Controlled Trial (RCT).

Accepted Answer

Randomized, Clinical, Randomized, Randomized

Question 4

The ___ group in an RCT receives a placebo or standard treatment.

Accepted Answer

control

Question 5

In experimental research, the difference between the two groups should be the essential element that is the ___.

Accepted Answer

independent variable (IV)

Question 6

In a study comparing the effect of a low carbohydrate diet with a low-fat diet on weight loss, the independent variable (IV) is the type of ___.

Accepted Answer

diet

Question 7

In a Randomized Controlled Trial (RCT), participants are randomly assigned to either the ___ group or the ___ group.

Accepted Answer

treatment, control

Question 8

Random assignment in experimental research is opposed to '___ occurring' or '___ choice'.

Accepted Answer

naturally, provider

Question 9

In experimental research, IV stands for ___ Variable and DV stands for ___ Variable.

Accepted Answer

Independent, Dependent

Question 10

Subjects in experimental research are ___ assigned to groups.

Accepted Answer

randomly

Question 11

The ___ group in an RCT receives the experimental intervention.

Accepted Answer

treatment

Question 12

___ variables are any factors not related to the purpose of the study, which may affect dependent variables.

Accepted Answer

Extraneous

Question 13

Experimental research aims to make inferences about ___ and ___.

Accepted Answer

cause, effect

Question 14

Randomization in an RCT helps to eliminate ___ bias.

Accepted Answer

selection

Question 15

The ___ group is the most effective design strategy for ruling out extraneous effects.

Accepted Answer

control

Question 16

Blinding in an RCT can be ___, ___, or ___.

Accepted Answer

single, double, triple

Question 17

In experimental research, ___ can never be demonstrated with complete certainty.

Accepted Answer

causality

Question 18

In a study comparing the effect of a low carbohydrate diet with a low-fat diet on weight loss, the dependent variable (DV) is ___ loss.

Accepted Answer

weight

Question 19

An individual characteristic, such as age or gender, is known as an ___ variable.

Accepted Answer

attribute

Question 20

In experimental research, the ___ variable is 'manipulated' by the experimenter.

Accepted Answer

independent

Question 21

A control group may receive standard treatment, no treatment, or ___ treatment.

Accepted Answer

placebo

Question 22

The primary outcome in an RCT is the main result that is measured to see if the ___ had an effect.

Accepted Answer

intervention

Question 23

Dependent variables are also known as ___ responses.

Accepted Answer

outcome

Question 24

The independent variable in experimental research must be an '___ IV' (e.g., treatment).

Accepted Answer

active

Question 25

Experimental research is designed to control for ___ variables.

Accepted Answer

confounding

Question 26

One essential component of experimental research is to include a ___ or ___ group.

Accepted Answer

control, comparison