According to the wechsler adult intelligence scale (wais), items requiring people to look at a visual stimulus with an essential part missing and identify the absent element is called

Picture Completion is the correct answer.

WAIS, which stands for Wechsler Adult Intelligence Scale, was an IQ test created by David Wechsler to measure intelligence and cognitive skills in older adolescents and adults. One of its performance substests is the picture completion which requires people to look at a visual stimulus with significant part missing and identify the missing element. The Picture Completion subtest measures one's ability to quickly perceive visual details.        

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