In the Examination of Objects of Physical Evidence, Class Characteristics

question 23

Multiple Choice

In the examination of objects of physical evidence, class characteristics are important because they can:

• A)place an item into a specific category.
• B)distinguish one item from another.
• C)be used to trace the item to its manufacturer.
• D)define how the object was used by an individual.

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Definitions:

Fixed-Interval

A schedule of reinforcement where rewards are provided after a specific and constant period of time has passed.

Variable-Interval

A reinforcement schedule where a reward is given after a random period has elapsed following a response.

Fixed-Ratio

A schedule of reinforcement where a response is rewarded only after a specified number of responses, in behaviorist psychology.

Variable-Ratio

A schedule of reinforcement where a response is reinforced after an unpredictable number of responses, making it highly effective in maintaining behavior after it has been learned.