Time dilation and acceleration in depression
- Authors: Kent, Lachlan , Van Doorn, George , Klein, Britt
- Date: 2019
- Type: Text , Journal article , Review
- Relation: Acta Psychologica Vol. 194, no. (2019), p. 77-86
- Full Text: false
- Reviewed:
- Description: Background: A recent meta-analysis left open a significant question regarding altered time perception in depression: Why do depressed people overproduce short durations and under-produce longer durations if their present experience is that time flows slowly? Experience and judgement of time do not seem to accord with one another. Analysis: By excluding two of the six studies on methodological grounds from a previous meta-analysis of medium-length interval productions, and re-analysing the remaining four studies, the present paper finds that subjective time accelerates from initial dilation within present experience (approximately 1 s duration) to subsequent acceleration within working memory (approximately 30 s duration) when depressed. Proposals: It is proposed that depressive time dilation and acceleration refer to the default mode and central executive networks, respectively. The acceleration effect is suggested to occur due to mood congruency between long intervals, boredom, and depression. This mood congruency leads to the automatic recall of intrusive, negative, and non-specific autobiographical long-term memories used to judge intervals from previous experience. Acceleration in working memory then occurs according to the contextual change model of duration estimation. Limitations: The meta-analysis is limited to four studies only, but provides a potential link between time experience and judgement within the same explanatory model. Conclusions: Similarities between psychological time dilation/acceleration and physical time dilation/acceleration are discussed.
Systema Temporis : a time-based dimensional framework for consciousness and cognition
- Authors: Kent, Lachlan , Van Doorn, George , Klein, Britt
- Date: 2019
- Type: Text , Journal article , Review
- Relation: Consciousness and Cognition Vol. 73, no. (2019), p. 1-12
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- Reviewed:
- Description: This study uses a combined categorical-dimensional approach to depict a hierarchical framework for consciousness similar to, and contiguous with, factorial models of cognition (cf., intelligence). On the basis of the longstanding definition of time consciousness, the analysis employs a dimension of temporal extension, in the same manner that psychology has temporally organised memory (i.e., short-term, long-term, and long-lasting memories). By defining temporal extension in terms of the structure of time perception at short timescales (<100 s), memory and time consciousness are proposed to fit along the same logarithmic dimension. This suggests that different forms of time consciousness (e.g., experience, wakefulness, and self-consciousness) are embedded within, or supported by, the ascending timescales of different modes of memory (i.e., short-term, long-term, etc.). A secondary dimension is also proposed to integrate higher-order forms of consciousness/emotion and memory/cognition. The resulting two-dimensional structure accords with existing theories of cognitive and emotional intelligence.