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 124 for “"individual variability"”.
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Determinants and correlates of intra-individual variability in reaction time
… 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 or even alternative measure. RT IIV is often found to be …
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Individual variability in the behaviour and morphology of larval Atlantic cod (Gadus morhua, L.)
Individuals both within and between populations can vary markedly in a number of traits, including behaviour, life-history patterns and morphology. These differences do not simply reflect noise around a mean, but reflect real and important variability that can have a number of important …
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The effect of individual variability and larger carnivores on the functional response of cheetahs
… of mesopredator suppression may depend on individual variability. This is the first time the functional response for a large mesopredator, has been quantified and the first time a dome shaped response has been recorded in a mammal. My work shows the value in accounting for individual …
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DEVELOPMENT OF INDIVIDUAL VARIABILITY IN FUNCTIONAL CONNECTIVITY AND ITS ASSOCIATIONS WITH COGNITION AND PSYCHOPATHOLOGY IN YOUTH
… risks are heterogeneous among adolescents. Individual differences in brain functional connectivity (FC) have been used for cognitive performance prediction and mental health risk calculation. However, the interindividual FC variability during adolescence is still uncharacterized. Leveraging …
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Intra-individual variability in adult ADHD: an exploration of the viability of distinct purely inattentive condition
Researchers have suggested that intraindividual variability (IIV), or variation in cognitive testing performance within an individual across a measure or group of measures, may be an endophenotypic marker of Attention-Deficit/Hyperactivity Disorder (ADHD). However, not all studies have consistently …
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Characterising the structural brain connectome in Alzheimer's disease and its relation to cognitive intra-individual variability.
… (DTI) as well as increased reaction time intra-individual variability (RT IIV) on neurocognitive testing. However, the relationship between these changes measured on these different modalities remains unexplored. To explore possible relationships between these alterations, this study used …
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The Contribution of Body Morphology to Individual Variability in the Thermoregulatory Responses to Exercise, and the Effect of Altered Skin Blood Flow on Heat Loss Potential
… were performed to examine biophysical sources of individual variability in the thermoregulatory responses to exercise, and the influence of skin blood flow on heat loss potential during severe heat stress. Study 1 investigated whether unbiased comparisons of changes in rectal temperature (ΔTre) …
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Neural Correlates of Inter-Individual Differences in Pain Processing Investigated by Functional Magnetic Resonance Imaging of the Entire Central Nervous System
… experience, characterized by tremendous inter-individual variability. Pain perception can differ substantially across individuals due to many factors such as age, gender, genetics, cognition and emotionality etc. Some individuals are very sensitive to pain whereas others tolerate pain well. …
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VARIABILITY IN REPETITIONS AT SUBMAXIMAL RELATIVE INTENSITIES IN YOUNGER AND OLDER MEN AND WOMEN
PURPOSE: To assess the individual variability in the capacity to lift submaximal loads in younger and older men and women in resistance training exercises.
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Non-native perception, production, and lexical processing of tone
… language. I examine the extent to which individual variability in tone learning facility depends on factors attributable to a learner’s first language, namely the function of pitch for lexical distinctions (‘L1 tonal status’) and the shapes of native tonal and intonational contrasts …
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Inferring mechanisms of V(D)J recombination using statistical inference on high-throughput immune repertoire data
… V(D)J recombination in humans, with a focus on individual variability, nucleotide trimming, and the role of sequence microhomology. First, I identify genetic loci associated with modifying V(D)J recombination probabilities using genome-wide association inference and reveal individual differences …
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THE EFFECTS OF RARE GENETIC VARIANTS AND GENETIC ANCESTRY ON DRUG RESPONSE AND SEVERITY IN AIRWAYS DISEASES
… that explain a small proportion of inter-individual variability in drug response and severity. Genetic ancestry could be associated with disease severity in individuals from recently admixed ethnic groups, such as African Americans where a higher percentage of African ancestry was …
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Population pharmacokinetics: model-free approach and nonlinear mixed-effects modelling
… predictors of exposure in a wide range of variability in the data. The non-linear mixed effect modelling is used to confirm the results of the model-free investigation. Model-free approach is successfully applied to several drugs. Non-linear Mixed Effects population models developed for the …
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Title Investigation of the moral reasoning of offending and non-offending adolescents using the sociomoral reflection measure-short form
… to the Gilligan hypothesis. Patterns of intra-individual variability in moral stage use were also investigated to test claims regarding structural consistency in moral reasoning. It was found that participants were demonstrating intra-individual variability in their patterns of moral reasoning, …
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Characterising social cognition and its predictors in individuals with premanifest Huntington’s disease
… (DSM-5). Deficits have been reported in individuals with HD across four social cognitive domains: theory of mind, social perception, empathy and social behaviour. Social cognitive impairment may cause difficulty in maintaining social relationships, work performance and increased …
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Individual differences in cocaine's locomotor activating effects predicts reward-directed behavior
Humans exhibit marked individual differences in susceptibility to develop drug dependence. Addiction-like behaviors have been modeled in rodents as well with similar individual variability in the development of addiction-like behaviors. One potential mechanism that could differentiate …
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Characterization of the genetic variability of human arylalklamine-N-acetyltransferase (AA-NAT) and its potential effects on melatonin production and the sleep pattern
… (AA-NAT). Genetic variability of the AA-NAT gene may therefore potentially influence sleep patterns in normal population and account for the widely reported inter-individual variability of melatonin production. In this project, an initial sleep pattern study …
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Variability of Cholesterol Accessibility in Human Red Blood Cells Measured Using a Bacterial Cholesterol Binding Toxin
… Accessible cholesterol levels were stable within individuals, but varied >10 fold among individuals. Significant variation was observed among ethnic groups (Blacks>Hispanics>Whites). Variation in accessibility of RBC cholesterol was unrelated to the cholesterol content of RBCs or plasma, but was …
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Neural correlates of nonverbal social communication in high-risk infants
… of the variance, highlighting the importance of individual variability in infant studies. Lower activation in left frontal regions was related to higher expressive language while lower activation in right frontal and temporal regions was related to higher receptive language. Overall, higher …
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