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.
Overview of RNA processing and posttranscriptional gene control
Negative feedback control of a regulated variable.
The basal ganglia are clusters of gray matter that control learned movement and are involved with ...
A “reduced power” warning light indicates a fault with the electronic throttle control system on ...
Differential metabolic profile from livers of control mice and livers from mice 2 h after treatment ...
EXPERIMENTAL INSIGHT