Metabolite monitoring concept for the biometric identification of individuals from the skin surface.

This study aims at proof of concept that constant monitoring of the concentrations of metabolites in three individuals' sweat over time can differentiate one from another at any given time, providing investigators and analysts with increased ability and means to individualize this bountiful biological sample. A technique was developed to collect and extract authentic sweat samples from three female volunteers for the analysis of lactate, urea, and L-alanine levels. These samples were collected 21 times over a 40-day period and quantified using a series of bioaffinity-based enzymatic assays with UV-vis spectrophotometric detection.

Bullying, victimization, and bystander behavior: Risk factors across elementary-middle school transition.

Students with mental health difficulties are at increased risk for victimization, and this risk may be exacerbated during the transition to middle school, when there is an increase in bullying behaviors. Through a social-ecological lens, the present study investigated how internalizing and externalizing problems in the fall of fifth grade were associated with bullying role behaviors in the fall of sixth grade and whether these associations differed by gender. This study expanded prior research by examining not only bullying and victimization, but also bystander behaviors (i.

Examination of a Tiered Training Model to Increase School Psychology Graduate Students' Behavior Specific Praise.

Several strategies (e.g., performance feedback, video models, tactile prompting) have been found to be effective for improving preservice teachers' use of foundational behavior management skills.

Determination of Time since Deposition of Fingerprints via Colorimetric Assays.

Past investigations involving fingerprints have revolved heavily around the image of the fingerprint-including the minutiae, scarring, and other distinguishing features-to visually find a match to its originator. Recently, it has been proven that the biochemical composition can be used to determine originator attributes, such as sex, via chemical and enzymatic cascades. While this provides pertinent information about the originator's identity, it is not the only piece of information that can be provided.

Fingerprint Analysis: Moving Toward Multiattribute Determination via Individual Markers.

Forensic science will be forever revolutionized if law enforcement can identify personal attributes of a person of interest solely from a fingerprint. For the past 2 years, the goal of our group has been to establish a way to identify originator attributes, specifically biological sex, from a single analyte. To date, an enzymatic assay and two chemical assays have been developed for the analysis of multiple analytes.