由血液循环理论的发现和发展看医学观更替的过程及其机制

以血液循环理论的发现和发展为例，分析了医学观在医学发展中的作用，提出了医学观更替的三个阶段，即原有医学观失稳且陷入危机、新观念的放大及其局部变革、整合并全面更替，揭示了医学观更替的一般过程及其机制。     

BRIEF REPORT Forgetting “murder” is not harder than forgetting “circle”: Listwise-directed forgetting of emotional words

The list-method directed forgetting (DF) paradigm has attracted the attention of clinical psychologists because it is widely believed that a retrieval inhibition mechanism underlies its effects. Thus, the idea is that people are capable of intentionally forgetting negative emotional material. On the other hand, there are reasons to believe that negative stimuli are relatively resistant to forgetting. The present experiment compared listwise DF of emotional and neutral words in healthy college students. A modified procedure (i.e., a simulated computer crash) showed a reliable DF-effect in that list 1 recall was larger under remember than forget instructions whereas the reverse was true for list 2 recall. Emotionality did not modulate the magnitude of this effect. Thus, negative emotional material is not resistant to forgetting. Although overall, the present findings are in line with a retrieval inhibition interpretation (i.e., decreased access to list 1 material), attentional focusing during list 2 learning may provide a sufficient explanation.