Rules and development in triad classification task performance

2004 ◽  
Vol 24 (3) ◽  
pp. 289-321 ◽  
Author(s):  
Maartje E.J Raijmakers ◽  
Brenda R.J Jansen ◽  
Han L.J.van der Maas
Keyword(s):  
Task Performance ◽  
Classification Task

Implementation Strategies for the International Dysphagia Diet Standardisation Initiative (IDDSI), Part I: Quantitative Analysis of IDDSI Performance Among Varied Participants

2020 ◽  
Vol 29 (3) ◽  
pp. 1514-1528 ◽  
Author(s):  
David W. Rule ◽  
Lisa Kelchner ◽  
Ashley Mulkern ◽  
Sarah Couch ◽  
Noah Silbert ◽  
...  
Keyword(s):  
Health Care ◽  
Socioeconomic Factors ◽  
Task Performance ◽  
Health Care Professionals ◽  
Prior Experience ◽  
Classification Task ◽  
Testing Methods ◽  
Link Type ◽  
Self Study ◽  
Predictive Relationships

Purpose The International Dysphagia Diet Standardisation Initiative (IDDSI) is an international standardized framework for texture-modified diets (TMDs). However, user accuracy in conducting IDDSI testing methods are unknown. The aims of this study were threefold: (a) to describe performance on two tasks (an IDDSI knowledge quiz and a TMD sample classification task), (b) to determine interrater and intrarater agreement for classification task performance, and (c) to determine predictive relationships between socioeconomic factors or prior knowledge on task performance. Method Sixty-eight participants were recruited, including health care professionals and non–health care-related individuals. A mixed between-subjects and within-subject design was used. All participants completed a baseline knowledge quiz, 30 min of self-study using the IDDSI.org curriculum, a post self-study knowledge quiz, and a TMD classification task of 21 TMD samples with representation across all IDDSI levels. Data were collected via electronic survey. Results There was a significant increase ( p < .001) between pre and post self-study knowledge quiz scores. On the classification task, unmodified foods and drinks were most accurately classified with thickened liquids (IDDSI Levels 1, 2, 3) most inaccurately classified. At baseline, moderate interrater agreement was found with intrarater agreement ranging from fair to almost perfect among identical samples. No significant predictive relationships were found between classification task performance and socioeconomic status or prior experience. Conclusions Thirty minutes of self-study using the online IDDSI.org curriculum improved baseline IDDSI knowledge check performance. Overall accuracy of TMD classification was low and warrants further evaluation given potential adverse health outcomes secondary to inappropriate TMD presentation. Given no predictive relationships between socioeconomic factors and prior experience on task performance, the IDDSI curriculum and classification task appear accessible to various users, including non–health care-related participants. Future studies should more closely observe testing behavior to further characterize variation in participants' use of the testing methods.

Individual Differences in Secondary Task Performance and Subjective Estimation of Workload

1985 ◽  
Vol 56 (1) ◽  
pp. 311-322 ◽  
Author(s):  
Kathryn A. Bloem ◽  
Diane L. Damos
Keyword(s):  
Individual Differences ◽  
Task Performance ◽  
Verbal Memory ◽  
Secondary Task ◽  
Subjective Experience ◽  
Memory Task ◽  
Primary Task ◽  
Classification Task ◽  
Residual Capacity ◽  
Task Differences

This experiment had two purposes. First, it attempted to replicate the easy-to-hard prediction for residual capacity described by Lansman and Hunt (1982) for two complex task combinations. Second, it examined the relation between individual differences in resource capacity, as indicated by the easy-to-hard prediction, and the subjective experience of workload. One task combination involved a verbal-memory task paired with a vowel-consonant classification task. The other combination involved a paired-associate task with a name-classification task. The easy-to-hard prediction was not replicated for either task combination; easy primary task performance provided a better prediction of hard primary task performances than did secondary task performance. Measures of residual capacity were not related to subjective ratings of workload, however, the workload scales were sensitive to between-task differences.

The Perceived Relations between Color, Direction, and Speed of Motion

1986 ◽  
Vol 30 (5) ◽  
pp. 440-444 ◽  
Author(s):  
Kelly Harwood ◽  
Christopher Wickens ◽  
Arthur Kramer
Keyword(s):  
Task Performance ◽  
Classification Task ◽  
Color Classification ◽  
Formal Definitions ◽  
Moving Stimulus ◽  
Speeded Classification

This study investigated the perceived relations between color, direction of motion, and speed of motion. According to formal definitions of integrality and separability (Garner & Fefoldy, 1970), direction and speed of motion are integral while color is separable. Ten individuals classified two levels of each dimension in a speeded classification task. Performance with redundant and orthogonal manipulations of all possible pair and triplet combinations was investigated. Results for classifying speed and direction showed that they are asymmetrically integral. That is, variations in direction affected the classification of speed far more than the converse. In addition, redundant color facilitated classification of speed and direction but orthogonal color did not interfere. Classification of color, however, is far from resistant to variations in direction. Both redundant and orthogonal manipulations of direction interfered with color classification. A second experiment demonstrated that the locus of interference for direction on color is at the perceptual level rather than the reponse stage of processing. Quite simply, it is more difficult to classify the color of a moving Stimulus than a stationary one. Taken together, the findings of this study have important implications for the use of color in dynamic flight displays.

Effects of Concurrent Manual Task Performance on Connected Speech Acoustics in Individuals With Parkinson Disease

2019 ◽  
Vol 62 (7) ◽  
pp. 2099-2117 ◽  
Author(s):  
Jason A. Whitfield ◽  
Zoe Kriegel ◽  
Adam M. Fullenkamp ◽  
Daryush D. Mehta
Keyword(s):  
Task Performance ◽  
Speech Production ◽  
Dual Task ◽  
Motor Task ◽  
Task Condition ◽  
Connected Speech ◽  
Speech Acoustics ◽  
Single Task ◽  
Manual Task ◽  
Task Conditions

Purpose Prior investigations suggest that simultaneous performance of more than 1 motor-oriented task may exacerbate speech motor deficits in individuals with Parkinson disease (PD). The purpose of the current investigation was to examine the extent to which performing a low-demand manual task affected the connected speech in individuals with and without PD. Method Individuals with PD and neurologically healthy controls performed speech tasks (reading and extemporaneous speech tasks) and an oscillatory manual task (a counterclockwise circle-drawing task) in isolation (single-task condition) and concurrently (dual-task condition). Results Relative to speech task performance, no changes in speech acoustics were observed for either group when the low-demand motor task was performed with the concurrent reading tasks. Speakers with PD exhibited a significant decrease in pause duration between the single-task (speech only) and dual-task conditions for the extemporaneous speech task, whereas control participants did not exhibit changes in any speech production variable between the single- and dual-task conditions. Conclusions Overall, there were little to no changes in speech production when a low-demand oscillatory motor task was performed with concurrent reading. For the extemporaneous task, however, individuals with PD exhibited significant changes when the speech and manual tasks were performed concurrently, a pattern that was not observed for control speakers. Supplemental Material https://doi.org/10.23641/asha.8637008

The Influence of Emotionally Relevant Context on the Evoked Cardiac Response Triggered by an Irrelevant Stimulus

2003 ◽  
Vol 17 (2) ◽  
pp. 61-68 ◽  
Author(s):  
Michal Kuniecki ◽  
Robert Barry ◽  
Jan Kaiser
Keyword(s):  
Task Performance ◽  
Auditory Stimulus ◽  
Irrelevant Stimulus ◽  
Cardiac Response ◽  
Mental Task ◽  
Negative Valence ◽  
Cardiac Deceleration ◽  
Relevant Context ◽  
Stimulus Valence ◽  
Affective Stimulus

Abstract The effect of stimulus valence was examined in the evoked cardiac response (ECR) elicited by the exposition of neutral and negative slides as well as by an innocuous auditory stimulus presented on the affective foregrounds generated by the slides. The exposition of the aversive slide produced prolonged cardiac deceleration in comparison with the neutral slide. Similar prolonged deceleration accompanied exposition of the neutral auditory stimulus on the negative visual foreground in comparison with the neutral foreground. We interpret these results as an autonomic correlate of extended stimulus processing associated with the affective stimulus. The initial deceleration response, covering two or three slower heart beats, may be prolonged for several seconds before HR reaches the baseline level again. In such a case the evoked cardiac deceleration can be functionally divided into two parts: the reflexive bradycardia (ECR1) elicited by neutral stimuli and a late decelerative component (LDC). We can speculate that the latter is associated with an additional voluntary continuation of processing of the stimulus. This must involve some cognitive aspect different from the mental task performance which leads to the accelerative ECR2, and we suggest that processing of a stimulus with negative valence is involved in generating the LDC.

A Latent State-Trait Analysis of Current Achievement Motivation Across Different Tasks of Cognitive Ability

2017 ◽  
Vol 33 (5) ◽  
pp. 318-327
Author(s):  
Philipp Alexander Freund ◽  
Vanessa Katharina Jaensch ◽  
Franzis Preckel
Keyword(s):  
Cognitive Ability ◽  
Task Performance ◽  
Achievement Motivation ◽  
Fear Of Failure ◽  
Specific Task ◽  
Test Taker ◽  
Specific Interest ◽  
Probability Of Success ◽  
Ability Tests ◽  
Perceived Challenge

Abstract. The current study investigates the behavior of task-specific, current achievement motivation (CAM: interest in the task, probability of success, perceived challenge, and fear of failure) across a variety of reasoning tasks featuring verbal, numerical, and figural content. CAM is conceptualized as a state-like variable, and in order to assess the relative stability of the four CAM variables across different tasks, latent state trait analyses are conducted. The major findings indicate that the degree of challenge a test taker experiences and the fear of failing a given task appear to be relatively stable regardless of the specific task utilized, whereas interest and probability of success are more directly influenced by task-specific characteristics and demands. Furthermore, task performance is related to task-specific interest and probability of success. We discuss the implications and benefits of these results with regard to the use of cognitive ability tests in general. Importantly, taking motivational differences between test takers into account appears to offer valuable information which helps to explain differences in task performance.

Response Interference as a Mechanism Underlying Implicit Measures

2008 ◽  
Vol 24 (4) ◽  
pp. 218-225 ◽  
Author(s):  
Bertram Gawronski ◽  
Roland Deutsch ◽  
Etienne P. LeBel ◽  
Kurt R. Peters
Keyword(s):  
Task Performance ◽  
Psychological Research ◽  
Implicit Measures ◽  
Mediation Model ◽  
Response Interference ◽  
Relevant Evidence ◽  
Moderated Mediation Model ◽  
Stimulus Features ◽  
Underlying Mechanisms

Over the last decade, implicit measures of mental associations (e.g., Implicit Association Test, sequential priming) have become increasingly popular in many areas of psychological research. Even though successful applications provide preliminary support for the validity of these measures, their underlying mechanisms are still controversial. The present article addresses the role of a particular mechanism that is hypothesized to mediate the influence of activated associations on task performance in many implicit measures: response interference (RI). Based on a review of relevant evidence, we argue that RI effects in implicit measures depend on participants’ attention to association-relevant stimulus features, which in turn can influence the reliability and the construct validity of these measures. Drawing on a moderated-mediation model (MMM) of task performance in RI paradigms, we provide several suggestions on how to address these problems in research using implicit measures.

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