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

Author Question: Distinguish between random selection and random assignment. What will be an ideal ... (Read 118 times)

Ebrown

  • Hero Member
  • *****
  • Posts: 567
on: Jun 20, 2018
Distinguish between random selection and random assignment.
 
  What will be an ideal response?

Question 2

Distinguish the Hawthorne effect from the John Henry effect in experimental research.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nekcihc358

  • Sr. Member
  • ****
  • Posts: 327
Reply #1 on: Jun 20, 2018
Answer to Question 1

ANS:
Random selection refers to the process of selecting a sample from a population by chance means so that every member of the population has an equal probability of being chosen. Random assignment is the assignment of subjects to groups in such a way that, for any given placement, every member of the population has an equal probability of being assigned to any of the groups.

Answer to Question 2

ANS:
Both are subject effects that threaten internal validity. The Hawthorne effect refers to the tendency for subjects in the experimental group to change their behavior because of the attention gained from participating in an experiment. The John Henry effect refers to the tendency of control group subjects who know they are in an experiment to exert extra effort and perform above their typical average.


Ebrown

  • Member
  • Posts: 567
Reply 2 on: Jun 20, 2018
Thanks for the timely response, appreciate it

cassie_ragen

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

An example of color blindness test. A person with red-green color blindness would not be able to dis An example of color blindness test. A person with red-green color blindness would not be able to dis
Schematic representations of (a) random, (b) alternating, (c) block, and (d) graft copolymers. Schematic representations of (a) random, (b) alternating, (c) block, and (d) graft copolymers.
On the Flexible Item Selection Task (FIST) children are presented with three cards On the Flexible Item Selection Task (FIST) children are presented with three cards
If the random variable x is exponentially distributed with parameter λ = 4, then P(x ≤ ... If the random variable x is exponentially distributed with parameter λ = 4, then P(x ≤ ...
The effect of selection on allele frequency The effect of selection on allele frequency
Stabilizing selection eliminates extreme forms of a trait Stabilizing selection eliminates extreme forms of a trait
Video: Power Supply Polyacrylamide Gel Protein Sample

For a complete list of videos, visit our video library