Pierre Flourens surgically removed portions of a rabbit's cerebellum with the rabbit subsequently showing extreme problems with motor coordination. This surgical removal of portions of the cerebellum is an example of

When a researcher assigns participants to either an

experimental or a control group based on their last names, systematic differences between groups are created before the experiment even begins. This is a confounding variable referred to as _____ a) observer bias. b) participant bias. c) selection bias. d) assignment bias.

Empathy

A) always yields acts of kindness and helpfulness. B) can escalate into personal distress in some children. C) always leads to sympathy. D) is especially well-developed in shy, inhibited children.