Author Question: An experimental design a. is one in which the investigator has direct control over at least one ... (Read 72 times)

arivle123

  • Hero Member
  • *****
  • Posts: 569
An experimental design
 a. is one in which the investigator has direct control over at least one independent variable.
  b. is less capable of providing evidence of causal relationships than is an exploratory design.
  c. is less internally valid than a descriptive study.
  d. should be used only in realistic situations.
  e. is best suited for longitudinal analysis.

Question 2

Typically, __________ experiments have greater internal validity, and __________
  experiments have greater external validity.
 a. lab; field
  b. field; lab
  c. field; field
  d. lab; lab
  e. The internal and external validities are usually the same for both types of experiments.



zogaridan

  • Sr. Member
  • ****
  • Posts: 328
Answer to Question 1

a

Answer to Question 2

a



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

For a complete list of videos, visit our video library