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

Author Question: While participating in a timed experiment, the participants in the experimental group had to leave ... (Read 11 times)

stock

  • Hero Member
  • *****
  • Posts: 573
on: Jun 20, 2018
While participating in a timed experiment, the participants in the experimental group had to leave the room because of a fire drill. Which potential threat to internal validity would this example illustrate according to Campbell and his colleagues?
 
  a. maturation
  b. selection
  c. instrumentation
  d. history

Question 2

A researcher notices that the participants assigned to the experimental group were less likely to attend the second session in his experiment than those in the control group.
 
  The researcher is concerned that __________ might represent a potential threat to the internal validity of her study.
   a. history
   b. attrition
   c. instrumentation
   d. maturation


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nanny

  • Sr. Member
  • ****
  • Posts: 313
Reply #1 on: Jun 20, 2018
Answer to Question 1

d

Answer to Question 2

b


stock

  • Member
  • Posts: 573
Reply 2 on: Jun 20, 2018
Excellent

scottmt

  • Member
  • Posts: 322
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Chuckwalla body lengths at the end of a laboratory rearing experiment Chuckwalla body lengths at the end of a laboratory rearing experiment
(A) Each bronchiole terminates in an alveolar sac, a group of alveoli; (B) alveoli encased by networ (A) Each bronchiole terminates in an alveolar sac, a group of alveoli; (B) alveoli encased by networ
Older participants remember more information than younger participants when material has emotional ... Older participants remember more information than younger participants when material has emotional ...
The Taylor–Woods–Hughes experiment The Taylor–Woods–Hughes experiment
he Luria-Delbriick Experiment Demonstrating Are Spontaneous he Luria-Delbriick Experiment Demonstrating Are Spontaneous
In 1969 a UC Berkeley group fired a carbon nucleus at a californium target. Give In 1969 a UC Berkeley group fired a carbon nucleus at a californium target. Give
Video: Cardiac Cycle (Part 3 of 4)

For a complete list of videos, visit our video library