More Than One Independent Variable We Have a Higher-Order Interaction

question 4

Multiple Choice

More Than One Independent Variable We have a higher-order interaction in an experiment whenever

• A)an extraneous variable systematically changes with two or more dependent variables.
• B)an extraneous variable systematically changes across levels of two or more independent variables.
• C)the effect of one independent variable changes across levels of two or more other independent variables.
• D)there are more than two independent variables in the same experiment.

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Definitions:

Dendrite

A branched extension of a neuron that receives stimuli and conducts impulses toward the cell body.

Myelin Sheath

The fatty layer that surrounds and insulates the axons of some neurons, which enables faster transmission of electrical impulses.

Neurotransmitters

Chemicals that transmit signals across a synapse from one neuron to another neuron, muscle cell, or gland cell.

Synaptic Vesicle

Membrane-bound sacs in the presynaptic terminals of neurons that store neurotransmitters, which are released into the synaptic cleft in response to an action potential.