Dr. Smith conducted a research study involving schizophrenic adults in which he looked at their facial expressions in home movies taken when they were children. He was trying to determine if the development of schizophrenia could be predicted by facial expressions showing limited emotional reactions. This research study focused on the negative symptom called .

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Affective flattening is a negative symptom of schizophrenia characterized by limited emotional expressions. Dr. Smith's study focused on this symptom by analyzing the facial expressions of schizophrenic adults in childhood home movies to see if affective flattening in childhood could predict the development of schizophrenia.

Dr Smith Conducted a Research Study Involving Schizophrenic Adults in Which