AP PSYCHOLOGY

Detailed explanation-1: -Who was Franciscus Donders? Dutch physiologist who in 1868 did one of the first experiments that would be known as a cognitive psychology experiment. Donders’ experiment: How long does it take to make a decision? Donders was interested in determining how long it takes for a person to make a decision.

Detailed explanation-2: -Donders was the first person to measure the time it takes to name stimuli by spoken responses. One way he achieved this was by using the “noematachograph and phonautograph” as follows. Two participants A and B were seated before the mouth of the phonautograph.

Detailed explanation-3: -a method of separating out hypothetical stages of mental processing by requiring participants to perform a set of reaction time tasks in which each successive task differs from its predecessor by the addition of a single mental stage.

Detailed explanation-4: -Franciscus Cornelis Donders (1818–1889) was the first scientist to apply the subtraction method to cognition. By comparing simple to choice reaction times, he was able to draw conclusions regarding the time course of choice processing. This idea is now a central tenet of cognitive neuroscience.

Detailed explanation-5: -In 1868, eleven years be-fore the founding of the first laboratory of scientific psychology, Franciscus Donders, a Dutch physiologist, did one of the first cognitive psychology experiments.