What Was Oskar Pfungst's Evidence That Clever Hans Was Not

question 124

Multiple Choice

What was Oskar Pfungst's evidence that Clever Hans was not doing math?​

• A)Hans's answers were only slightly more accurate than chance.
• B)​Hans guessed randomly when scientists were present.
• C)​Hans answered correctly only when his trainer, Mr. von Osten, was present.
• D)​Hans answered correctly only if the questioner knew the correct answer.

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Definitions:

Color-Blindness

A visual condition where an individual has difficulty distinguishing between certain colors, typically involving reds, greens, and blues.

X Chromosome

One of the two sex chromosomes, XX typically resulting in female characteristics and XY in male, playing a crucial role in genetic determination of sex.

Y Chromosome

A sex chromosome found in males, typically paired with an X chromosome, determining male biological characteristics.

Dominant

Referring to a trait, gene, or allele that suppresses the expression of another trait, gene, or allele when both are present in an individual.