Impaired cognitive shifting in parkinsonian patients on anticholinergic therapy

A Self-Rating Depression Scale

William W.K. Zung · Archives of General Psychiatry · 1965 · 9.7K citations · Full text

Social Sciences, Psychiatry, Psychology +17

A Modified Card Sorting Test Sensitive to Frontal Lobe Defects

Hazel E. Nelson · Cortex · 1976 · 2.5K citations

Medicine, Psychology, Neuropsychology +8

A Simple Objective Technique for Measuring Flexibility in Thinking

Esta A. Berg · The Journal of General Psychology · 1948 · 2.3K citations

Social Sciences, Behavioral Sciences, Psychology +9

A behavioral analysis of degree of reinforcement and ease of shifting to new responses in a Weigl-type card-sorting problem.

David A. Grant, Esta A. Berg · Journal of Experimental Psychology · 1948 · 2.2K citations

Public Health, Behavioral Sciences, Psychology +12

COGNITIVE DEFICITS IN THE EARLY STAGES OF PARKINSON'S DISEASE

Andrew J. Lees, Eileen Smith · Brain · 1983 · 798 citations

Medicine, Neurology, Neuroscience +17