The CRUNCH Model Suggests That There Are Two Main Mechanisms

question 61

Multiple Choice

The CRUNCH model suggests that there are two main mechanisms the older brain uses to perform tasks:

• A) increased synapses and neurotransmitters.
• B) memory aids such as mnemonic devices and brain training exercises.
• C) brain training and recruiting friends to help with cognitive tasks.
• D) more of the same and supplementary processes.

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Definitions:

Variability

The extent to which data points in a statistical distribution or data set diverge from the average or mean.

Normal Distribution

A symmetrical, bell-shaped distribution of data where most of the observations cluster around the central peak and probabilities for values taper off equally on both sides.

Standard Normal Distribution

A specific probability distribution that has a mean of zero and a standard deviation of one, representing a normal distribution.

Unit of Measurement

A definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity.