Siblings share _____ of their genes on average.

In the Renaissance, the medical model brought some unusual treatments for those with mental disorders

These included bloodletting and tossing patients into a pit of snakes. Amazingly, some patients actually showed improvement! It is possible that these treatments worked, but it is also possible that this improvement was a result of the placebo effect. This interpretation of these historical events demonstrates which of the six principles mentioned in your chapter? A) Replicability B) Extraordinary claims C) Correlation vs. causation D) Ruling out rival hypotheses

In terms of understanding, which of the following is not usually seen until around age five and is linked to language development?

A) Conservation B) Complex categories C) Grouping D) Hierarchical categorization