Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 42 for “"Reaction time (RT)"”.
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Development of vehicle lane changing model within u-turn facilities
… are to determine the speed differences (Vd), reaction time (RT) and safe distance where from those parameters and their relationships, the statistical model was developed and used in estimating the safe distances to execute the lane changing within the U-turn facilities. The data were taken …
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Processing of code-mixed sentences by two types of bilinguals: A comparison of code-mixers and non-code-mixers
This study was based on a reaction time (RT) experiment conducted to see if there were differences in RTs between code-mixers and non-code-mixers in a sentence verification task. Task 1 was a timed test in which Spanish-English bilingual code-mixers and non-code-mixers responded to …
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Reaction time and general intellectual ability: The effects of cues on the relationship
This study examined the relationship between reaction time (RT) and intelligence. Fifteen female and nine male caucasian undergraduates and one black male undergraduate ranging in age from 19 to 38 served as subjects. The measure of intelligence was the Otis-Quick Scoring Mental Ability Test. An …
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The Relationship between Video Game Playing Habits and Reaction Time in Both Males and Females of Different Age Groups.
… sessions, and type of video game played, and reaction time (RT) in males and females of different age groups. The population consisted of volunteer participants (N = 28). Participants were asked to answer a questionnaire inquiring about their video game playing habits. After completing the …
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Examining Children’s Conceptual Subitizing Skill and its Role in Supporting Math Achievement
… achievement in Grade 2 students. Both reaction time (RT) and strategy use to enumerate patterned structures of 4 to 10 dots were examined. Using cluster analysis on the collected enumeration speeds, three distinct groups were identified that supports the acquisition of conceptual …
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The Effect of a Combined Multiple-Modality Exercise Intervention on Sensorimotor Function in Community Dwelling Older Adults, with A Subjective Cognitive Complaint: The M4 Study (Multi-Modal; Mind Motor)
… cognitive impairment, and ultimately dementia. Participants, 55+ years, with a self-reported cognitive complaint completed a 6-month exercise intervention. They were randomized to either a multiple modality exercise program (M2), consisting of aerobic, stretching and balancing exercises or a …
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A comparison of elite tennis players' motor abilities with those of elite basketball, soccer and volleyball players
The difference in certain motor abilities was tested among four different groups of athletes. Specifically, this study compared elite tennis players' reaction time (RT), movement time (MT) and agility (AG), to soccer, basketball and volleyball players' MT, RT and AG; Thirty-three subjects were …
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Timecourse of a perceptual judgment and factors affecting it
… fast and take on the order of milliseconds. The time taken to view the stimuli during these choices, termed processing time (PT), is an important quantity because it defines how informed, and thereby accurate, the choice is. Typically, the PT has been estimated from the reaction time (RT), which …
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Tracing causes and consequences of human intelligence through genetic and cognitive data
The work included in this dissertation represents empirical inquiries into three areas of cause and consequence for individual differences in human intelligence: How molecular genetic data can be used to draw inference about environmental mechanisms, how intelligence relates to information …
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The perceived timing of events across different sensory modalities. A psychophysical investigation of multisensory time perception in humans.
The experiments reported within this thesis use psychophysical techniques to examine the factors which determine perceived multisensory timing in humans. Chapters 1 and 2 describe anatomical and psychophysical features of temporal processing, respectively, whilst Chapter 3 introduces the reader to …
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Determinants and correlates of intra-individual variability in reaction time
Traditionally, reaction time (RT) was conceived of as an average speed of a number of responses made by an individual, or mean RT. Increasingly, however, intraindividual variability in reaction time (RT IIV) – the consistency of responses by a single person across trials – is used as an additional …
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White Matter Integrity And Age Related Differences In Reaction Time Components
… might play a role in age-related increase in reaction time (RT). However, the association between microstructural differences in particular white matter regions or tracts with RT is unclear. Decomposing RT into parts might be a better way to understand the relationship due to multiple …
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The Influence of Time Pressure and Information Load on Rule-Based Decision-Making Performance
… was evaluated under varying levels of time pressure and information load to determine their influence on simple rule-based decision-making. Consistent errors, biases, and heuristics found in human decision-making have been attributed to attempts to reduce attentional demands and to the …
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The nature of semantic memory deficits in Alzheimer's disease : evidence from event-related brain potentials and reaction time measures
… Evidence from event-related brain potentials and reaction time measures Semantic memory impairment is commonly observed in patients with dementia of the Alzheimer type (DAT); however the nature of the impairment is unclear. Some researchers argue that the deficit is a loss of information within …
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P300 Topographic Differences Between Smokers and Nonsmokers During a Visual Continuous Performance Task
… hit rate (HR), fake-alarm rate (FA), and median reaction time (RT) were examined. Findings: Withdrawn smokers showed a decreased P300 amplitude relative to the NS and NWS groups, even after smoking. In contrast, there were no P300 latency differences between the three groups. A difference in P300 …
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Processing Speed and Executive Abilities in Children with Phenylketonuria
… early- and continuously-treated PKU. Method: Participants were 42 children with PKU and 81 typically-developing children ranging from 7 to 18 years of age. Children completed three computerized reaction time: RT) tasks: simple reaction time, go/no-go, stimulus-response compatibility) and seven …
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The effects of redundancy on reaction time in a letter naming task
… value (H value) of the fifth letter and the reaction time (RT) of the naming response was studied. Inconsistent results were obtained. Only a few significant correlations were yielded between H value and RT. The same results were found for the correlations between the transitional probability …
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Lateralization of motor behavior as a measure of cognitive functioning and resting-state electrocortical activity
… that the laterality between hands in self-report and motor measures maps onto hemispheric lateralization and this has important implications for psychopathology (e.g., depression) and cognition. The present study evaluates the relationship between performance on finger-tapping tasks (FTT), …
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The effects of an ultra-endurance event on heart rate variability and cognitive performance during induced stress in Ironman triathletes
The effects of long-term participation in ultra-endurance exercise on the cardiovascular system have recently been the subject of much interest. It is well known that HRV, a marker of autonomic activity, is enhanced with long-term aerobic exercise training. However, after acute exercise, HRV is …
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A comparison of visual and memory search processes within a single task
… randomly between trials of a single choice reaction time (RT) task. The following sequence of events for each of the 280 trials occurred. A ''memory" list of letters appeared, which subjects (N = 12) turned off by pulling simultaneously a left and right-hand RT trigger. After 3 sec, a …
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