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 14 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

bassamabas

  • Member
  • Posts: 294
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Splicing mechanisms in group I and group II self-splicing introns and spliceosom Splicing mechanisms in group I and group II self-splicing introns and spliceosom
The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ... The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ...
Counterbalancing in the Predator Experiment Counterbalancing in the Predator Experiment
The experimental system that permits observation of rotation in the F1 component of F1F0 ATP synthas The experimental system that permits observation of rotation in the F1 component of F1F0 ATP synthas
R-loop experimental analysis R-loop experimental analysis
Video: Muscle Twitch and Muscle Tension - Motor unit size and force

For a complete list of videos, visit our video library