Social and Behavioral Sciences Commons^™

Basic Behavioral Processes Involved In Procrastination, Thomas R. Zentall

Psychology Faculty Publications

Procrastination involves an irrational putting off of engaging in a course of action, in spite of expecting to be worse off for the delay. I suggest that to understand the processes underlying procrastination one should examine its relation to several behavioral procedures that have been studied in humans and other animals. For example, in delay discounting, smaller rewards that come sooner are often preferred over larger rewards that come later. In the context of delay discounting, procrastination can be viewed as the preference for an immediate competing activity over the delay to work on a required task. Another process similar …

Mitochondrial Phenotypes In Purified Human Immune Cell Subtypes And Cell Mixtures, Shannon Rausser, Caroline Trumpff, Marlon A. Mcgill, Alex Junker, Wei Wang, Siu-Hong Ho, Anika Mitchell, Kalpita R. Karan, Catherine Monk, Suzanne C. Segerstrom, Rebecca G. Reed, Martin Picard

Psychology Faculty Publications

Using a high-throughput mitochondrial phenotyping platform to quantify multiple mitochondrial features among molecularly defined immune cell subtypes, we quantify the natural variation in mitochondrial DNA copy number (mtDNAcn), citrate synthase, and respiratory chain enzymatic activities in human neutrophils, monocytes, B cells, and naïve and memory T lymphocyte subtypes. In mixed peripheral blood mononuclear cells (PBMCs) from the same individuals, we show to what extent mitochondrial measures are confounded by both cell type distributions and contaminating platelets. Cell subtype-specific measures among women and men spanning four decades of life indicate potential age- and sex-related differences, including an age-related elevation in mtDNAcn, …

A Conceptual Framework Of Information Requirements For Scientists Using Human Biological Samples, Sujin Kim

Information Science Faculty Publications

Introduction. This study was undertaken to develop an information requirement framework for scientists who use biological samples and related data in their research.

Method. A self-reporting questionnaire completed by 137 respondents was used to collect data regarding demographics, bio-sample management, bio-sample use and requirements, data requirements, and work and research-related roles and activities.

Analysis. Descriptive and TwoStep Cluster analyses were used to analyse the survey data necessary for developing a framework of information requirements.

Results. Two groups of biomedical scientists (clinical group and basic scientist group) were formed by their distinct characteristics. A conceptual framework of information requirements for bio-sample …