Leibovitz, D. P. (2007) Word Length Effect (In Serial Recall). Lecture given to the “PSYC 2700D: Introduction to Cognitive Psychology” class. Carleton University, pp. 1-39, Ottawa, Ontario, Canada. [doi: 10.13140/RG.2.1.4325.1688] (pdf)
Abstract: Introduces the experimental paradigm in cognitive psychology.
Abstract: The study of word-length effect concentrated mostly on the accuracy of recalling short and long words in both pure and mixed lists. Previous studies showed that pure long lists were much poorly remembered. Hulme et al. (2004) found that word-length effect could be abolished in mixed lists when the short and long words are alternated. We investigated distinctiveness and found it to be a salient cue for improved correct recall when the list of words has a single distinctive transition. Lists contained three short words following by three long words and vice versa. Surprisingly, in the short-long condition, there was also an improvement in position 3 recall. One of the possible explanations could be the strategic shift of working memory resource.
A Perceptual Learning and Matching System (PLMS) is hypothesized that pre-attends the auditory scene during sleep with the goal of classifying sounds into the background to be ignored or into the foreground which will cause arousal for further conscious action. It is also active while an individual is awake and is responsible for the automatic acquisition of capabilities such as non-conceptual linguistic components.
In the case of chaotic snoring sounds, the partner’s PLMS cannot detect a pattern and will awaken the partner, while the snorer’s PLMS will correlate the snoring sounds directly with the individual’s own breathing pattern and hence, ignore it.
The main purpose of this investigation is to understand the functional characteristics of PLMS during a sleep paradigm which is not confounded by consciousness nor rationality. PLMS is a hitherto new cognitive system not before studied.
A secondary purpose is to investigate whether the PLMS of the snorer’s partner can be trained to ignore the snoring sounds. Several experiments are proposed to verify this possibility. Partners of snorers may be more affected than the snorers themselves!
Leibovitz, D. P. (2012) Modelling visual processing via emergence. Invited talk presented at the 22nd Annual Meeting of the Canadian Society for Brain, Behaviour and Cognitive Science (CSBBCS) in the Computational understanding of Cognition Symposium. Queen’s University, Kingston, Ontario, Canada. [doi: 10.13140/RG.2.1.5141.9368]