Levels of processing effects on recognition memory in patients with schizophrenia
Levels of processing effects on recognition memory in patients with schizophrenia
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DOI：
10.1016/j.schres.2004.05.019
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发表时间：
2005-04-01
影响因子：
4.5
通讯作者：
Goldberg, TE
中科院分区：
文献类型：
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作者：
Paul, BM;Elvevåg, B;Goldberg, TE
这项研究试图描述精神分裂症患者的表现，与健康参与者相比，在需要编码不同深度的项目的记忆任务中。参与者包括21名精神分裂症患者和26名健康对照者。在研究的编码阶段，参与者以两种方式处理连续呈现的单词：感知上（通过决定字母“a”是否出现在单词中）或语义上（通过对每个单词做出活的/非活的决定）。在研究的识别阶段，研究人员向参与者展示了一个单词列表，其中包含在编码阶段（在字母决策任务或语义决策任务期间）出现过的项目，以及以前从未见过的项目（箔片）。尽管精神分裂症患者在识别任务中的总体表现较差，但语义编码在两组中促进了识别的程度相同。换句话说，虽然组和编码存在显著的主效应，但不存在组x编码条件。这一结果与之前的研究结果一致，即精神分裂症患者和健康对照者在学习和记忆任务上的表现缺乏质的差异。它还表明，对患者使用的编码过程施加限制的策略可能有助于提高他们学习和记忆信息的效率。(C) 2004 Elsevier B.V.版权所有
This study sought to characterize the performance of patients with schizophrenia, as compared with healthy participants, on a memory task that required encoding of items to different depths. Participants included 21 individuals with schizophrenia and 26 healthy controls. During the encoding phase of the study, participants processed successively presented words in two ways: perceptually (by making a decision as to whether the letter "a" was present in the word) or semantically (by making a living/ nonliving decision for each word). During the recognition phase of the study, participants were presented with a list of words containing items that had been presented during the encoding phase (during either the letter decision task or the semantic decision task), as well as items that had not been seen before (foils). Though patients with schizophrenia performed more poorly overall on the recognition task, recognition was facilitated by semantic encoding to an equivalent degree in both groups. In other words, while significant main effects were present for group and encoding, no group x encoding condition was present. This result is consistent with previous findings of a lack of qualitative differences in performance on learning and memory tasks between patients with schizophrenia and healthy controls. It also suggests that strategies that place constraints on the encoding processes used by patients may help improve the efficiency with which they learn and remember information. (C) 2004 Elsevier B.V. All rights reserved.