A computational theory of executive cognitive processes and multiple-task performance: Part I. Basic mechanisms.

1997 ◽  
Vol 104 (1) ◽  
pp. 3-65 ◽  
Author(s):  
David E. Meyer ◽  
David E. Kieras
Keyword(s):  
Task Performance ◽  
Cognitive Processes ◽  
Computational Theory ◽  
Multiple Task

Methodology and the Use of Dual and Complex-Task Paradigms in Human Factors Research

1982 ◽  
Vol 26 (4) ◽  
pp. 354-358
Author(s):  
Phillip L. Ackerman ◽  
Christopher D. Wickens
Keyword(s):  
Individual Differences ◽  
Task Performance ◽  
Cognitive Processes ◽  
The Other ◽  
Complex Task ◽  
Problem Situations ◽  
Human Factors Research ◽  
Multiple Task ◽  
Data Analytic ◽  
Data Level

Two problem situations are discussed with respect to the multiple task literature, one stemming from statistical artifacts derived by inappropriate data-analytic procedures and the other caused by a failure to utilize specific models which map theory into data-level descriptions. These issues are discussed as they apply to individual differences research and to investigations of cognitive processes, resources, and systems in multiple task performance. Examples and illustrations of these issues are provided.

Verbal statistical learning: Prior knowledge impacts word identification but not metacognition

2020 ◽  
Author(s):  
Laetitia Zmuda ◽  
Charlotte Baey ◽  
Paolo Mairano ◽  
Anahita Basirat
Keyword(s):  
Task Performance ◽  
Prior Knowledge ◽  
Statistical Learning ◽  
Cognitive Processes ◽  
Bayesian Approach ◽  
Word Identification ◽  
Artificial Language ◽  
Artificial Languages ◽  
Transitional Probabilities ◽  
Fully Bayesian

It is well-known that individuals can identify novel words in a stream of an artificial language using statistical dependencies. While underlying computations are thought to be similar from one stream to another (e.g. transitional probabilities between syllables), performance are not similar. According to the “linguistic entrenchment” hypothesis, this would be due to the fact that individuals have some prior knowledge regarding co-occurrences of elements in speech which intervene during verbal statistical learning. The focus of previous studies was on task performance. The goal of the current study is to examine the extent to which prior knowledge impacts metacognition (i.e. ability to evaluate one’s own cognitive processes). Participants were exposed to two different artificial languages. Using a fully Bayesian approach, we estimated an unbiased measure of metacognitive efficiency and compared the two languages in terms of task performance and metacognition. While task performance was higher in one of the languages, the metacognitive efficiency was similar in both languages. In addition, a model assuming no correlation between the two languages better accounted for our results compared to a model where correlations were introduced. We discuss the implications of our findings regarding the computations which underlie the interaction between input and prior knowledge during verbal statistical learning.

TASKILLAN: A Simulation to Predict the Validity of Multiple Resource Models of Aviation Workload

1988 ◽  
Vol 32 (2) ◽  
pp. 168-172 ◽  
Author(s):  
Christopher D. Wickens ◽  
Kelly Harwood ◽  
Leon Segal ◽  
Inge Tkalcevic ◽  
Bill Sherman
Keyword(s):  
Task Performance ◽  
Model Validation ◽  
Predictive Models ◽  
Spatial Awareness ◽  
Level Flight ◽  
Helicopter Flight ◽  
Processing Resources ◽  
Multiple Resource ◽  
Multiple Task ◽  
Over Time

The objective of this research was to establish the validity of predictive models of workload in the context of a controlled simulation of a helicopter flight mission. The models that were evaluated contain increasing levels of sophistication regarding their assumptions about the competition for processing resources underlying multiple task performance. Ten subjects performed the simulation which involved various combinations of a low level flight task with three cognitive side tasks, pertaining to navigation, spatial awareness and computation. Side task information was delivered auditorily or visually. Results indicated that subjective workload is best predicted by relatively simple models that simply integrate the total demands of tasks over time (r = 0.65). In contrast, performance is not well predicted by these models (r < .10), but is best predicted by models that assume differential competition between processing resources (r = 0.47). The relevance of these data to predictive models and to the use of subjective measures for model validation is discussed.

Unraveling What’s on Our Minds

2018 ◽  
Author(s):  
Claire M. Zedelius ◽  
Jonathan W. Schooler
Keyword(s):  
Decision Making ◽  
Working Memory ◽  
Task Performance ◽  
Cognitive Processes ◽  
Positive Mood ◽  
Mind Wandering ◽  
Different Types ◽  
And Behavior

Mind-wandering encompasses a variety of different types of thought, involving various different experiential qualities, emotions, and cognitive processes. Much is lost by simply lumping them together, as is typically done in the literature. The goal of this chapter is to explore the nuances that distinguish different types of mind-wandering. The chapter draws on research on mind-wandering as well as other literatures to gain a better understanding of how these different types of mind-wandering affect cognition and behavior. It specifically discusses the distinct effects of different types of mind-wandering on task performance, working memory, mood, and creativity. Finally, the chapter discusses the idea of deliberate engagement in particular types of mind-wandering as a way to achieve desirable outcomes, such as maintaining a positive mood, enhancing creativity, or aiding decision-making.

Methodology in the Use of Synthetic Tasks to Assess Complex Performance

1967 ◽  
Vol 9 (4) ◽  
pp. 375-384 ◽  
Author(s):  
Earl A. Alluisi
Keyword(s):  
Task Performance ◽  
Face Validity ◽  
Trade Offs ◽  
Specific Performance ◽  
Psychological Functions ◽  
Multiple Task

The application of synthetic tasks to the assessment of complex performance is discussed in relation to the trade-offs involved in achieving adequate levels of face validity and in specifying the exact changes in psychological functions that may result from particular environmental manipulations. It is argued that the multiple-task performance battery approach can provide levels of face validity adequate to maintain the motivation of subjects while at the same time permitting the identification of changes in specific performance functions. The characteristics of this approach are discussed in relation to a program of research on the effects of confinement and demanding work-rest schedules on crew performance.

Metalinguistic aspects of bilingual processing

2001 ◽  
Vol 21 ◽  
pp. 169-181 ◽  
Author(s):  
Ellen Bialystok
Keyword(s):  
Phonological Awareness ◽  
Task Performance ◽  
Cognitive Processes ◽  
Bilingual Children ◽  
Metalinguistic Awareness ◽  
Syntactic Awareness ◽  
Alternate Conception ◽  
Bilingual Processing ◽  
And Control ◽  
Metalinguistic Ability

This chapter examines differences in metalinguistic development between monolingual and bilingual children in terms of three subcategories: word awareness, syntactic awareness, and phonological awareness. In each case, some studies have reported advantages for bilingual children, but equally, other studies have found either no difference between the groups, or, in some cases, monolingual advantages. In the discussion of each of these areas, the kinds of tasks for which bilingual and monolingual children perform differently are identified. In none of these three subcategories of metalinguistic awareness do bilingual children exhibit a uniform and consistent advantage over monolinguals. An alternate conception of metalinguistic ability is proposed in which two cognitive processes, analysis and control, are directly responsible for task performance. These processes are involved in all metalinguistic tasks but to different degrees. Re-examining the results in this way reveals that bilingual advantages occur reliably on tasks that make high demands on control but are not evident in tasks that make high demands on analysis. The implications of this pattern for metalinguistic ability are considered.

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