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node

n.

1. a point in a graph, tree diagram, or the like at which lines intersect or branch.

2. a single point or unit in an associative model of memory. Nodes typically represent a single concept or feature, are connected to other nodes (usually representing semantically related concepts and features) by links in an associative network, and may be activated or inhibited to varying degrees depending on the conditions.

3. in artificial intelligence, see neural network. —nodal adj.

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Psychology term of the day

January 30th 2025

critical region

critical region

a range of values that may be obtained from a statistical procedure that would lead to rejecting a specific claim about a population. More specifically, it is the portion of a probability distribution containing the values for a test statistic that would result in rejection of a null hypothesis in favor of its corresponding alternative hypothesis. Also called rejection region. Compare acceptance region.