How Do We Know That All Indo-European Languages Have a Common

question 8

Short Answer

How do we know that all Indo-European languages have a common ancestor?

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Definitions:

Aversive Stimulus

A stimulus that is unpleasant or painful, leading to avoidance behavior.

Delay

The period between the onset of the conditioned stimulus and the onset of the unconditioned stimulus in the conditioning process.

Aversive Stimulus

A stimulus that is unpleasant or painful, often used to modify behavior through avoidance learning or negative reinforcement.

Negative Reinforcement

The process of strengthening a behavior by removing or avoiding a negative outcome or unpleasant stimulus as a result of the behavior.