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 192 for “"individual variation"”.
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Individual Variation in French-L2 Spelling Ability
Canadian French-as-a-Second-Language (FSL) programmes teach students how to read and write in French with the goal of bilingualism. However, students are not consistently attaining a level of French equivalent to native French speakers (Genesee, 1987) and many graduates do not retain their French …
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Individual variation in cooperative behaviour in meerkats
Individual variation in cooperation is a striking yet poorly understood feature of many animal societies, particularly in cooperative breeders where individuals assist in the care of young that are not their own. While previous research on these systems has emphasised the plasticity of helping and …
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Individual variation in reproductive success in the wandering Albatross
… it is important to protect the productive individuals, and so I aimed to identify factors accounting for individual-level variation in long-term reproductive success. I examined current breeding characteristics that might explain past reproductive performance amongst experienced breeders.
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Inter-individual variation in saliva antioxidant status in relation to periodontal disease
… antioxidant flow rate was significantly lower in individuals with severe PD (TAA 0.2 10 ± 0.02 M/ml/min) than those with healthy gingivae (TAA 0.270 ± 0.02 iiM/ml/min) (p
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Individual variation in early numerical development: Impact of linguistic diversity and home environment
Contains fulltext : 107692.pdf (Publisher’s version ) (Open Access)
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Inter-individual variation within social groups: how metabolic rate shapes the pace of life
… physiological, and life-history traits in individual bees and used a path analysis to demonstrate that variation in metabolic rate plays a fundamental proximate role in driving the covariance among these traits. We combined this with a factor analysis in a structural equation model …
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The role of individual variation in auditory and visual processing: implications for mate choice
… on understanding the factors that contribute to variation in male sexual signals and variation in female sensory perception and behavioral responses to these signals. I addressed several specific research questions using the brown headed cowbird (Molothrus ater) as a model species: (i) how does …
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Within- and among-individual variation in metabolic rate in juvenile Atlantic salmon, Salmo salar
… at accruing further resources. The way that individuals within species allocate energy resources is an intriguing issue that has implications for understanding competition, population structuring and the response of populations to environmental change. Energy budgets account quantitatively …
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MicroRNA Gene Expression States Underlying Individual Variation in Aging and Lifespan in Isogenic C. elegans
… between species, but lifespan among same-species individuals is also highly variable. While much effort has been devoted to uncovering longevity-associated traits and lifespan-extending perturbations in humans and model organisms, how differences in lifespan arise between individuals is unknown. …
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INDIVIDUAL VARIATION IN WINTER BROOK TROUT (SALVELINUS FONTINALIS) MOVEMENT IN A SMALL NORTHERN MICHIGAN STREAM
<p>Winter is a time of year of low temperatures and limited food availability. Brook trout (Salvelinus fontinalis) survival in winter is dependent on several factors including their condition after spawning in the fall and possibly their behavior in winter. Ice that forms during winter can …
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Social context shapes individual variation in behavior, learning, and neural gene expression in a swordtail fish
… shapers of behavior, yet how sociality affects individual variation in behavior, cognition, and its neural underpinnings is not well understood. Here, we characterized cognitive and behavioral variation as a function of social context in male and female El Abra swordtails (Xiphophorus …
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Astringency and other oral sensations : biological sources of individual variation and association with food and beverage behaviour
… examines the influence of biological sources of individual variation on the perception of prototypical orosensory stimuli, food liking, self-reported alcohol liking and consumption, and indices of health. Two orosensory indices were examined: propylthiouracil (PROP) responsiveness, a …
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Who Exercises and When? The Effects of Intra- and Inter-Individual Variation on the Likelihood and Duration of Exercise
… study examined the ability of inter- and intra-individual characteristics to predict the likelihood and duration of exercise as well as mood. One hundred forty-nine undergraduates (mean age = 19.11; 53% women; 79.19% White) participated in a six-day study. Online surveys measured participants' …
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Individual variation and the role of L1 in the L2 development of English grammatical morphemes: insights from learner corpora
… of case studies that quantitatively analyze individual variation and the role of native language (L1) in second language (L2) development of English grammatical morphemes and explain the findings with existing SLA theories. The dissertation investigates the L2 development of morphemes based …
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Non-structural Deterrents and Opportunistic Dispersal in an Invasive Fish: The Role of Among-Individual Variation on Common Carp Movement
… decisions are often made at the level of the individual, but among-individual variation in dispersal behaviour is rarely considered in aquatic conservation and invasion control. To address this challenge, my thesis applied concepts of behavioural ecology to invasion biology. Using an invasive …
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The Effects of Prednisone and Prednisone Plus Ultralow-dose Aspirin on Coagulation Parameters in Healthy Dogs
… in healthy dogs, and to determine intra-individual variation in thromboelastography (TEG). Animals: 14 healthy experimental dogs and 10 healthy client-owned dogs Procedures: Prospective, randomized, blinded study. TEG was performed twice three days apart on each experimental dog prior to …
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A Proximate Perspective on the Cooperative Behavior of a Lekking Passerine
… the mechanisms responsible for driving individual variation in behavior is a foundational question in organismal biology. Answering these types of questions is necessary for understanding how tradeoffs are mediated as well as potential constraints on evolutionary responses to selection. …
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Post-exercise oxygen consumption and heart rate recovery as possible measures of the homeostatic stress of an exercise bout Theresa Naomi Carol Mann.
… possible applications; - to identify inter-individual variation in the homeostatic stress of a standardized exercise bout - to detect intra-individual variation in the homeostatic stress of different exercise bouts- to detect intra-individual variation in “readiness to train”, based on the …
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