What can be said about the beginning and end of the sequence of events at a crime scene?
a. They often are obvious to the investigators.
b. They often are difficult to determine.
c. They give clues as to the missing events that must fit in the middle.
d. a and c
Question 2
A threat to internal validity that occurs when the treatment spills over from the experimental group and control group subjects modify their behavior because they learn of the treatment is called ___________.
a. instrumentation
b. experimental mortality
c. spill over effect
d. experimental effects
e. diffusion of treatment
DNA Sequence
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