[The specific cognitive stile of pain patients supports chronification of pain].
BACKGROUND
In a cognitive perspective, chronic pain comprises at least three dimensions: First it is possible to study the relevance of pain related attitudes, beliefs and coping cognitions for the chronification of pain. Second psychological processes of learning and memory processes can be analysed. Third we can investigate uncontrolled cognitions in chronic pain patients.


OBJECTIVE
The first part of the present paper deals with representations of pain events in autobiographical memory. In the second part a hindsight bias experiment is used as a prototype of altered information processing in the context of chronic pain. STUDY 1: In study one recollection of pain related events, pain experience and the sensory recalling of pain occurrences were sampled in 20 chronic pain patients, 17 psychiatric patients and 38 healthy controls. Pain patients showed a specific kind of pain related memory which had no parallel among psychiatric patients. Based on learning theory the significance of a pain related memory for chronification is discussed. STUDY 2: In the second study 18 pain patients, 13 psychiatric patients and 18 healthy controls were tested with a hindsight bias experiment. The hindsight-effect was observed in the usual extend in the student control group, but was significantly greater in the pain group and absent in the psychiatric sample. In addition to this global finding, multinomial modeling revealed group differences in specific model parameters. Basic units of information processing interact with the chronification of pain. This method of analysis thus proved as a promising tool for the assessment of cognitive aspects of clinical disorders.
Ruoss
M
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Psychologisches Institut, Universität Bonn.