Brain Health Knowledge in Community-Dwelling Older Adults

Aging and its effects on a person's quality of life are a growing health concern and burden for many Americans. Recently, studies have shown that adopting certain healthy behaviors may help maintain and or prevent age-related health issues such as cognitive decline. However, many people are unaware of these newfound facts. Furthermore, there is insufficient research evidence to understand how older adults view brain health and the differences between diverse groups of older adults. This study examines brain health knowledge and behaviors among Caucasian and African-American community-dwelling older adults in North Carolina. Findings were significant for level of education and total brain health knowledge scores, though there were no significant differences between races. In addition, there was a significant association between total number of health conditions and total brain health knowledge scores that warrants further study.     

DNA microarray wet lab simulation brings genomics into the high school curriculum

We have developed a wet lab DNA microarray simulation as part of a complete DNA microarray module for high school students. The wet lab simulation has been field tested with high school students in Illinois and Maryland as well as in workshops with high school teachers from across the nation. Instead of using DNA, our simulation is based on pH indicators, which offer many ideal teaching characteristics. The simulation requires no specialized equipment, is very inexpensive, is very reliable, and takes very little preparation time. Student and teacher assessment data indicate the simulation is popular with both groups, and students show significant learning gains. We include many resources with this publication, including all prelab introductory materials (e.g., a paper microarray activity), the student handouts, teachers notes, and pre- and postassessment tools. We did not test the simulation on other student populations, but based on teacher feedback, the simulation also may fit well in community college and in introductory and nonmajors' college biology curricula.     

The Development of Gender Stereotype Components

Developmental research has been limited by a narrow concept of stereotypes. A more complex model is presented, and developmental changes in gender stereotypes were investigated using the new model. In 2 studies, children were told about several sex-unspecified children, each described as having 1 masculine or 1 feminine characteristic. The children then predicted the likelihood of each story child having other masculine and feminine characteristics. In Study 1, 56 children (4–6 years) were told about target children who liked either a masculine or feminine toy, and then children predicted the targets' interests in other toys. In Study 2, 76 older children (6, 8, 10 years) were told about target children with a masculine or feminine characteristic from 1 of 4 categories (appearance, personality, occupations, toys), and then they predicted the likelihood of targets having other masculine and feminine characteristics from the same and from different categories as the cue. 2 developmental trends emerged: ( a ) children appear first to learn associations among characteristics relevant to their own sex and, later, to learn them for the other sex, and ( b ) older children's stereotypic judgments are more extreme than those of younger children. The implications of these results for the development of stereotypes, assessing gender knowledge, and understanding social judgments are discussed.     

Empathy Is Associated With Dynamic Change in Prefrontal Brain Electrical Activity During Positive Emotion in Children

Empathy is the combined ability to interpret the emotional states of others and experience resultant, related emotions. The relation between prefrontal electroencephalographic asymmetry and emotion in children is well known. The association between positive emotion (assessed via parent report), empathy (measured via observation), and second-by-second brain electrical activity (recorded during a pleasurable task) was investigated using a sample of one hundred twenty-eight 6- to 10-year-old children. Contentment related to increasing left frontopolar activation ( p  < .05). Empathic concern and positive empathy related to increasing right frontopolar activation ( p s < .05). A second form of positive empathy related to increasing left dorsolateral activation ( p  < .05). This suggests that positive affect and (negative and positive) empathy both relate to changes in prefrontal activity during a pleasurable task.     

Implementation fidelity of MyTeachingPartner literacy and language activities: Association with preschoolers’ language and literacy growth

There is surprisingly little empirical research examining issues of fidelity of implementation within the early childhood education literature. In the MyTeachingPartner project, 154 teachers were provided with materials to implement a supplemental classroom curriculum addressing six aspects of literacy and language development. The present study examines the degree of variability in three aspects of implementation fidelity – dosage, adherence, and quality of delivery – and whether these components of fidelity were associated with children's growth in language and literacy skills across the preschool year. Findings indicate that teachers reported using the curriculum fairly often (dosage) and that they were observed to generally follow curricular lesson plans (adherence). In contrast, the quality of delivery, defined as the use of evidence-based teacher–child interactions for teaching literacy and language, was much lower. Children in classrooms in which activities were observed to last for longer (dosage) and in which teachers exhibited higher quality of delivery of literacy lessons made significantly greater gains in early literacy skills across the preschool year. Also, teachers’ use of higher quality language interactions was associated with gains for children who did not speak English at home. Results have implications for teacher professional development and the supports provided to ensure that curricula are delivered most effectively.     

An Investigation of High-Achieving African-American Students Attending Community Colleges: A Mixed Methods Research Study

While much more research has been conducted about African-American college students in recent decades, there still exists a need for further explorations concerning factors related to student success and retention. For example, articles often explore the experiences of African-American students at four-year institutions and often use deficit frameworks instead of focusing on the experiences of successful students. To add to what is known, this article summarizes the findings of a multi-institutional mixed methods research study that explored the experiences of high-achieving African-American students attending community colleges. Specifically, the researchers explored noncognitive factors that influenced high academic achievement—defined as grade point average (GPA) higher than 3.00, why students considered leaving an institution, and why students decided to remain enrolled. Findings suggested that studying alone promoted a high cumulative GPA and increased the likelihood students never seriously considered leaving their institution. Studying alone, family relationships, hours spent studying with family, engaged and supportive faculty, financial aid, and the strive to succeed also promoted persistence. Relating to sex differences, student organizational involvement appeared to be more important for male persistence than female persistence at a significant level. The article closes with implications for future research and practice.     

Infants' Forgetting of Correlated Attributes and Object Recognition

Infants as young as 3 months of age can encode the relations among object features. Because object recognition depends critically upon a match between perceived feature configurations and representations of the object in long-term memory, the present experiments focused on infants' long-term memory for feature correlations. In 3 experiments with 72 3-month-olds, we documented the forgetting functions of different feature correlations, examined their relation to infants' memory for individual features, and replicated the findings with different stimuli. Infants were trained to activate a mobile composed of two kinds of blocks that differed in color, the figures displayed on them, and the figures' colors and were tested after different delays with recombinations of either the block colors, the figures, or the figure colors. Infants remembered some of the original feature combinations for up to 3 days but forgot all of them after 4 days. Even after 4 days, however, infants remembered the individual features that had entered into the original combinations. These results demonstrate that very young infants not only encode the relations among object features but also remember them for several days. Moreover, there is a dissociation in memory between features and feature relations: Feature relations are forgotten sooner than the individual features that comprise those relations.