By comparing reaction times across different tasks, donders was able to conclude how long the mind needs to perform a certain cognitive task. donders interpreted the difference in reaction time between the simple and choice conditions of his experiment as indicating how long it took to

make a decision about the stimulus.

Explanation:

Donders wanted to find out the level of cognition that was required in order to react to a stimulus. Cognition is the act of receiving a stimulus and understanding it completely.

The reaction time of various stimuli were noted and analyzed. The stimuli differed by their level of complexity. A longer time would indicate that the brain was taking longer to complete the cognitive processes. This was one of the first experiments in the field of cognitive psychology.

a would be the answer

answer; an active listener;