Allen H A
Br J Clin Psychol. 1982 Sep;21(Pt 3):205-12. doi: 10.1111/j.2044-8260.1982.tb00553.x.
The target detection performance of normals, chronic schizophrenics with positive symptoms and those with negative symptoms was compared in focused and divided attention conditions. The focused condition involved the monitoring of one, and the divided condition the monitoring of both, of the dichotically presented word lists. The amount and rate of list presentations were held constant across the conditions in an attempt to separate attentional from difficulty and capacity factors. Results showed that while the overall performance of both schizophrenic groups was lower than that of the normals, their performance change from the focused to the divided attention condition did not differ from that of the normals. These results do not support a schizophrenic selective attention deficit hypothesis.
在集中注意力和分散注意力条件下，比较了正常人、伴有阳性症状的慢性精神分裂症患者和伴有阴性症状的慢性精神分裂症患者的目标检测性能。集中注意力条件涉及对双耳呈现的单词列表中的一个进行监测，分散注意力条件涉及对双耳呈现的单词列表中的两个进行监测。在不同条件下，单词列表的呈现数量和速率保持不变，以试图将注意力因素与难度和能力因素区分开来。结果表明，虽然两个精神分裂症患者组的总体表现低于正常人，但他们从集中注意力条件到分散注意力条件下的表现变化与正常人并无差异。这些结果不支持精神分裂症选择性注意力缺陷假说。
