This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A difference between the performance of an experimental and a control group may be caused by: a. ... (Read 17 times)

lracut11

  • Hero Member
  • *****
  • Posts: 536
on: Jun 20, 2018
A difference between the performance of an experimental and a control group may be caused by:
 
  a. the independent variable.
  b. the dependent variable.
  c. a confounding variable.
  d. either the independent or a confounding variable.

Question 2

In an experiment to study the effects of caffeine on performance, an experimenter asked the male students in an introductory psychology class to drink two regular Pepsis before a test and the female students to drink two caffeine-free Pepsis. She then compared performance of the two groups on the test. A confounding variable in this study is:
 
  a. whether participants had studied for the test.
  b. the type of drink.
  c. the gender of the participants.
  d. the amount of caffeine in the Pepsi.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

sultana.d

  • Sr. Member
  • ****
  • Posts: 320
Reply #1 on: Jun 20, 2018
Answer to Question 1

D

Answer to Question 2

C


lracut11

  • Member
  • Posts: 536
Reply 2 on: Jun 20, 2018
Great answer, keep it coming :)

chereeb

  • Member
  • Posts: 326
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Cade and colleagues discovered a way to improve athletic performance and prevent salt and water imba Cade and colleagues discovered a way to improve athletic performance and prevent salt and water imba
The Local Group The Local Group
Experimental Apparatus for Fluidization Experiment Experimental Apparatus for Fluidization Experiment
Experimental identification of “coupling sites" Experimental identification of “coupling sites"
Feedback control of adrenal cortex Feedback control of adrenal cortex
Control of BP and Blood Flow Control of BP and Blood Flow
Video: Wound Repair Animation

For a complete list of videos, visit our video library