Sökning: "Nancy Pedersen"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Nancy Pedersen.

  1. 1. Latent variable models for longitudinal twin data

    Författare :Annica Dominicus; Juni Palmgren; Nancy L. Pedersen; Michael G. Kenward; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Latent variable models; twin models; variance components; change point models; non-ignorable nonresponse; likelihood ratio tests; Mathematical statistics; Matematisk statistik;

    Sammanfattning : Longitudinal twin data provide important information for exploring sources of variation in human traits. In statistical models for twin data, unobserved genetic and environmental factors influencing the trait are represented by latent variables. In this way, trait variation can be decomposed into genetic and environmental components. LÄS MER

  3. 2. The relationship between overweight and depression in view of genes, environment and their joint influence

    Författare :Sofia H. Kanders; Cecilia Åslund; Kent W. Nilsson; Dan Larhammar; Nancy Pedersen; Uppsala universitet; []
    Nyckelord :depression; overweight; obesity; plasticity; pharmacogenetics; genetics; antidepressants; breastfeeding; bullying; depression; övervikt; obesitas; plasticitet; farmakogenetik; genetik; antidepressiva läkemedel; mobbning; amning; Medicinsk vetenskap; Medical Science;

    Sammanfattning : Obesity and depression are known to often go hand in hand, but is this due to our genetic heritage, environmental factors or a combination thereof? With a neuroscientific approach, I have investigated the relationship between obesity and depression with the aim of bridging the different levels of research available in order to better understand this complex topic. Using data from a longitudinal cohort with adults, we analysed the genetic contribution to antidepressant response in Study I. LÄS MER

  4. 3. Human iris characteristics as biomarkers for personality

    Författare :Mats Larsson; Håkan Stattin; Nancy Pedersen; Richard J. Rose; Örebro universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Personality; iris characteristics crypts pigment dots contraction furrows; candidate genes MITF PAX6 SIX3 LMX1B FOXC1 FOXC2 PITX2 BMP4 OLFM3 MSX1 MSX2; anterior cingulate; genetic correlations; heritability; hemispheric asymmetries; approach-related behaviors; Psychology; Psykologi; Psykologi; Psychology;

    Sammanfattning : This dissertation explains why behavioral genetic research can be better informed by using characteristics in the human iris as biomarkers for personality, and is divided into five parts. Part I gives an introduction to the classical twin method and an overview of the findings that have led most developmental researchers to recognize that the normal variation of personality depends on a complex interplay between genetic and environmental factors. LÄS MER

  5. 4. Subjective Cognitive Complaints in the Working Population : The Influence of Objective Cognitive Functioning and Working Conditions

    Författare :Cecilia U. D. Stenfors; Lars-Göran Nilsson; Töres Theorell; Linda L. Magnusson Hanson; Gabriel Oxenstierna; Nancy Pedersen; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Subjective cognitive complaints; cognitive functioning; declarative memory; episodic memory; semantic memory; working memory; executive cognitive functioning; psychosocial working conditions; demand-control-support model; population-based; Psychology; psykologi;

    Sammanfattning : Cognitive functioning is important for managing work and life in general. However, subjective cognitive complaints (SCC), involving self-perceived difficulties with concentration, memory, decision making, and clear thinking are common in the general and in the working population and can be coupled with both lowered well-being and work ability. LÄS MER

  7. 5. Individual differences in the aging memory : Mediation accounts, moderators, and contextual factors

    Författare :Ola Sternäng; Åke Wahlin; Lars-Göran Nilsson; Nancy Pedersen; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; cognitive aging; interactions; context; mediation accounts; cross-cultural; longitudinal; individual differences; Psychology; Psykologi; Psychology; psykologi;

    Sammanfattning : Within the field of cognitive aging, mediation accounts propose that age affects cognitive abilities through a mediator variable. Most of these mediation accounts are developed based on studies with cross-sectional designs. LÄS MER