Confirmation bias, as the term is typically used in the psychological literature, connotes the seeking or interpreting of evidence in ways that are partial to existing beliefs, expectations, or a h...

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Confirmation Bias: A Ubiquitous Phenomenon in Many Guises:

The literature on interference in the Stroop Color-Word Task, covering over 50 years and some 400 studies, is organized and reviewed. In so doing, a set of 18 reliable empirical finding is isolated that must be captured by any successful theory of the Stroop effect. Existing theoretical positions are summarized and evaluated in view of this critical evidence and the 2 major candidate theories ―relative speed of processing and automaticity of reading― are found to be wanting. It is concluded that recent theories placing the explanatory weight on parallel processing of the irrelevant and the relevant dimensions are likely to be more sucessful than are earlier theories attempting to locate a single bottleneck in attention

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Half a century of research on the Stroop effect: an integrative review.

This article reviews a diverse set of proposals for dual processing in higher cognition within largely disconnected literatures in cognitive and social psychology. All these theories have in common the distinction between cognitive processes that are fast, automatic, and unconscious and those that are slow, deliberative, and conscious. A number of authors have recently suggested that there may be two architecturally (and evolutionarily) distinct cognitive systems underlying these dual-process accounts. However, it emerges that (a) there are multiple kinds of implicit processes described by different theorists and (b) not all of the proposed attributes of the two kinds of processing can be sensibly mapped on to two systems as currently conceived. It is suggested that while some dual-process theories are concerned with parallel competing processes involving explicit and implicit knowledge systems, others are concerned with the influence of preconscious processes that contextualize and shape deliberative reasoning and decision-making.

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Dual-Processing Accounts of Reasoning, Judgment, and Social Cognition

A review is presented of the book “Heuristics and Biases: The Psychology of Intuitive Judgment,” edited by Thomas Gilovich, Dale Griffin, and Daniel Kahneman.

Heuristics and Biases: The Psychology of Intuitive Judgment

Distinctions have been proposed between systems of reasoning for centuries. This article distills properties shared by many of these distinctions and characterizes the resulting systems in light of recent findings and theoretical developments. One system is associative because its computations reflect similarity structure and relations of temporal contiguity. The other is "rule based" because it operates on symbolic structures that have logical content and variables and because its computations have the properties that are normally assigned to rules. The systems serve complementary functions and can simultaneously generate different solutions to a reasoning problem. The rule-based system can suppress the associative system but not completely inhibit it. The article reviews evidence in favor of the distinction and its characterization. One of the oldest conundrums in psychology is whether people are best conceived as parallel processors of information who operate along diffuse associative links or as analysts who operate by deliberate and sequential manipulation of internal representations. Are inferences drawn through a network of learned associative pathways or through application of a kind of"psychologic" that manipulates symbolic tokens in a rule-governed way? The debate has raged (again) in cognitive psychology for almost a decade now. It has pitted those who prefer models of mental phenomena to be built out of networks of associative devices that pass activation around in parallel and distributed form (the way brains probably function) against those who prefer models built out of formal languages in which symbols are composed into sentences that are processed sequentially (the way computers function). An obvious solution to the conundrum is to conceive of the

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The empirical case for two systems of reasoning.

According to dual-process accounts of thinking, belief-based responses on reasoning tasks are generated as default but can be intervened upon in favor of logical responding, given sufficient time, effort, or cognitive resource. In this article, we present the results of 5 experiments in which participants were instructed to evaluate the conclusions of logical arguments on the basis of either their logical validity or their believability. Contrary to the predictions arising from these accounts, the logical status of the presented conclusion had a greater impact on judgments concerning its believability than did the believability of the conclusion on judgments about whether it followed logically. This finding was observed when instructional set was presented as a between-participants factor (Experiment 1), when instruction was indicated prior to problem presentation by a cue (Experiment 2), and when the cue appeared simultaneously with conclusion presentation (Experiments 3 and 4). The finding also extended to a range of simple and more complex argument forms (Experiment 5). In these latter experiments, belief-based judgments took significantly longer than those made under logical instructions. We discuss the implications of these findings for default interventionist accounts of belief bias.

Logic, beliefs, and instruction: a test of the default interventionist account of belief bias.

Two experiments are reported which compared proof-reading performance across three different modes of presentation. The results of Experiment 1 indicated that proof-reading accuracy was significantly worse on a VDU than on paper, with a photograph of the VDU display producing intermediate performance. It was also demonstrated that substitutions of visually similar errors were harder to detect than other error types. The results of Experiment 2 replicated these findings, but failed to find any difference between twin-column and single-column presentation. The findings are interpreted as indicating that character font may be a major factor in the poor performance with the VDU. It is suggested that the present experimental paradigm could be a useful assessment tool for the evaluation of display design.

Proof-reading on VDUs

267 third-year psychology students from four different UK higher education institutions took part in a study looking at their essay-writing tactics (called 'rules of the game'), cheating behaviours and approaches to studying. The results clearly showed that there was a widespread occurrence of both essay tactics and cheating and that these two types of behaviour correlated positively with each other. The findings relating to approaches to studying showed similar scores for both meaning and reproducing orientations across all four institutions but the correlations with essay tactics and cheating were mostly small. However, 'rules of the game' were found to correlate positively with a deep approach and fear of failure whereas cheating correlated positively with syllabus-boundness and negatively with use of evidence. The authors discuss their findings in relation to the pressures of assessment.

The Pressures of Assessment in Undergraduate Courses and their Effect on Student Behaviours

Four experiments are reported which investigated the types of truth tables that people associate with conditional sentences and the kinds of inferences that they will draw from them. The present studies differed from most previous ones in using different types of content in the conditionals, for example promises and warnings. It was found that the type of content had a strong and consistent effect on both truth tables and inferences. It is suggested that this is because in real life conditionals make probabilistic assertions, and that the strength of the probabilistic link is determined by the situation in which the conditional occurs. The implications of these findings for current theories of reasoning are considered and it is concluded that none of them is entirely satisfactory. It is suggested that more linguistically based theories may prove more successful.

Conditional Reasoning with Realistic Material

Aim. The aim of the present series of studies was to investigate what motivates undergraduate students and how their motivation changes during their degree course. The present research investigated both subject specific and generic motivators by asking students what knowledge areas, skills and experiences were important to them. Sample. Study 1: 336 prospective and current undergraduate psychology students at a university in southern England. Study 2: 57 year one psychology students from a university in the north of England. Study 3: 30 undergraduate psychology students from the university used in Study 1. Method. The studies used a modified version of the Radford and Holdstock (1993) scale to assess students’ objectives in taking a degree programme, by rating the importance of knowledge areas, skills development and experiences. Study 1 used a cross-sectional design comparing responses of student by year of study. Study 2 compared responses of students in year one in Study 1 to students at a second university. Study 3 used a longitudinal design to investigate changes in values by year of study. Results. The findings suggest that there are two types of students: those who are motivated by the discipline itself and those who are motivated by the acquisition of more general skills and experiences. The perceived importance of many aspects declines over the three years of the degree, and seems especially low in year two. However, some aspects, notably research methodology, and some skills and experiences show marked increases in the final year. Conclusions. Current theories of educational motivation need to be extended to account for the difference between subject-related and generic motives.

Stephen E. Newstead

Papers

Logic, beliefs, and instruction: a test of the default interventionist account of belief bias.

Proof-reading on VDUs

The Pressures of Assessment in Undergraduate Courses and their Effect on Student Behaviours

Conditional Reasoning with Realistic Material

The nature and development of student motivation.