Back to School Offer

Get 20% of Your First Order amount back in Reward Credits!

Get 20% of Your First Orderback in Rewards

All papers examples
Get a Free E-Book! ($50 Value)
HIRE A WRITER!
Paper Types
Disciplines
Get a Free E-Book! ($50 Value)

Experimental Research Two, Term Paper Example

Pages: 2

Words: 573

Term Paper

There are four different threats to internal validity: intact groups, extraneous variables, subject loss, and expectancies.  Any one of these threats could make an experiment invalid.  The threat of intact groups refers to groups that are formed prior to the start of an experiment.  An example of an intact group would be a group of students in a particular class at a university. Extraneous variables refers to decisions that have been made about the experiment that ultimately lead to a confounding.  This type of threat most often occurs when experimenters create different methods or group sizes within an experiment.  Subject loss, is another common type of threat and refers to participants in an experiments dropping out or having to remove themselves from the experiment for one reason or another. Lastly, the fourth type of threat to internal validity is expectancies.  Expectancies occur when participant’s performance can be persuaded according to demand characteristics (Zechmeister 172).

Based on the information given about the experiment of the memory drug we can conclude that the drug may be somewhat successful. We need to take into consideration whether or not any of the four threats of internal validity came into play. Of these four threats the one that sticks out the most as being problematic for the experiment described is the threat of expectancy.  As far as intact g groups are concerned, there is not much threat since a random group of students from KU were picked.  In the experiment there is also small chance that an extraneous variable occurred since there is only one experimenter doing this experiment. Also the experiment did not mention that any of the students had dropped out of the experiment this, therefore, eliminates the threat of subject loss.

The one threat this experimenter does need to be concerned about is the threat of expectancy.  S/he clearly had a bias as to believing the drug itself worked.  Even though he may have been determined to not let his personal beliefs get in the way of the experiment since it was conducted solely by this experimenter we cannot rule out that his own personal biases did not come into play.

In this experiment there is also the matter of external validity.  External validity is “the degree to which the conclusions in your study would hold for other persons in other places and at other times”(Trochim p.1). Thinking of external validity allows us to examine whether or not this experiment can be applied to general public. The experiment concerning the memory drug may be questionable as far as external validity is concerned because of the population of the participants.  While it is admirable that the experimenter chose a random sample of students, it is also important to note that the general public does not fall into the category of college students.  There are distinctive differences among college students and the general population.  The differences include age and health to name only two.  College students typically are younger than people most likely to seek this type of drug out, and it is also true that college students tend to be healthier than the general public, partly due to their youth.  If we truly want a random sample the experimenter needs to pick people of varying age groups to make the results more conclusive.

Works Cited

Trochim, W.  Research Methods Knowledge Base.  Web Center for Social Research Methods. 2006; http://www.socialresearchmethods.net/kb/external.php.

Zechmeister, J., Zechmeister, E., Shaughnessy, J. Essentials of Research Methods in Psychology. 2001 McGraw-Hill.

Time is precious

Time is precious

don’t waste it!

Get instant essay
writing help!
Get instant essay writing help!
Plagiarism-free guarantee

Plagiarism-free
guarantee

Privacy guarantee

Privacy
guarantee

Secure checkout

Secure
checkout

Money back guarantee

Money back
guarantee

Related Term Paper Samples & Examples

Sonny’s Blues and Social Issues, Term Paper Example

The boys described in Sonny’s Blues (Baldwin) are forced to grow up too fast. As the author confirms: “they were growing up with a rush [...]

Pages: 3

Words: 941

Term Paper

Duty of Care, Term Paper Example

Duty of care is implied in legal contracts as an obligation of one party towards another to fulfill their responsibilities without imposing any foreseeable harm.  [...]

Pages: 2

Words: 527

Term Paper

“Storm” and “The Story of an Hour” by Kate Chopin, Term Paper Example

The two stories that I chose to analyze for my final exam were both written by Kate Chopin. I believe them to be perfect examples [...]

Pages: 4

Words: 978

Term Paper

Kate Chopin, Term Paper Example

Having spent much time studying “Storm” and “The Story of an Hour” by Kate Chopin, I have realized that these texts incorporate various themes that [...]

Pages: 5

Words: 1450

Term Paper

July at the Multiplex, Term Paper Example

Royal Theater’s legal liability falls under issues of misrepresentation and fraud. Because of this, the consortium decides to conduct a sample size survey to find [...]

Pages: 1

Words: 295

Term Paper

Terrorism in Today’s World, Term Paper Example

Abstract Terrorism is, without question, an international concern in the modern world. No developed nation is unmindful of the threat, and it is a threat [...]

Pages: 11

Words: 3000

Term Paper

Sonny’s Blues and Social Issues, Term Paper Example

The boys described in Sonny’s Blues (Baldwin) are forced to grow up too fast. As the author confirms: “they were growing up with a rush [...]

Pages: 3

Words: 941

Term Paper

Duty of Care, Term Paper Example

Duty of care is implied in legal contracts as an obligation of one party towards another to fulfill their responsibilities without imposing any foreseeable harm.  [...]

Pages: 2

Words: 527

Term Paper

“Storm” and “The Story of an Hour” by Kate Chopin, Term Paper Example

The two stories that I chose to analyze for my final exam were both written by Kate Chopin. I believe them to be perfect examples [...]

Pages: 4

Words: 978

Term Paper

Kate Chopin, Term Paper Example

Having spent much time studying “Storm” and “The Story of an Hour” by Kate Chopin, I have realized that these texts incorporate various themes that [...]

Pages: 5

Words: 1450

Term Paper

July at the Multiplex, Term Paper Example

Royal Theater’s legal liability falls under issues of misrepresentation and fraud. Because of this, the consortium decides to conduct a sample size survey to find [...]

Pages: 1

Words: 295

Term Paper

Terrorism in Today’s World, Term Paper Example

Abstract Terrorism is, without question, an international concern in the modern world. No developed nation is unmindful of the threat, and it is a threat [...]

Pages: 11

Words: 3000

Term Paper

Get a Free E-Book ($50 in value)

Get a Free E-Book

How To Write The Best Essay Ever!

How To Write The Best Essay Ever!