The Earliest Archaeological Evidence for Farming in Western Africa Dates

question 49

Multiple Choice

The earliest archaeological evidence for farming in Western Africa dates to about

• A) 6,000 years ago.
• B) 5,000 years ago.
• C) 4,000 years ago.
• D) 3,500 years ago.

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Definitions:

Placebo Effect

A phenomenon where an improvement in health or wellbeing is observed after receiving a treatment that has no therapeutic value, due to the individual's belief in its efficacy.

Illusory Correlation

refers to the cognitive bias where a relationship between two variables is perceived to exist when no such relationship actually exists.

Double-Blind Procedure

A experimental setup in which neither the participants nor the experimenters know who is receiving a particular treatment, preventing bias in the results.

Illusory Correlation

The cognitive bias of perceiving a relationship between two variables even when no such relationship exists.