Sleep Habits and Patterns of College Students: An Expanded Study

This study represents an expansion of previous research investigating the prevalence of sleep difficulties in college students. Sleep quality and sleep habits were assessed via self‐report questionnaires. Poor sleep quality was reported by 22.6% of participants, whereas 65.9% replied that they experienced occasional sleep problems. More than half of the respondents noted feeling tired in the morning. Implications for counselors and their institutions are discussed.     

Internal sequential innovations: How does interrelatedness affect patent renewal?

The value of patented innovations has attracted substantial research attention, especially in the context of patent renewal. However, research often assumes that a firm's patented innovations are independent from each other. We draw upon evolutionary economics and suggest that some of a firm's patents share important genealogical relationships, which we refer to as internal sequential innovations. We propose internal sequential innovations are more valuable and therefore more likely to be renewed than stand-alone innovations. We examine our hypotheses from a dataset of US pharmaceutical and biotechnology patents. The results confirm our hypotheses at both the patent and the firm levels.     

Professors' and teachers' views of competencies necessary for mainstreaming

College professors' and classroom teachers' views of competencies necessary for mainstreaming were compared for II categories of competencies (75 competencies in all). The results indicate that teachers attach more importance to the set of competencies than do professors; there were significant differences between the two groups on approximately one-third of the items. In all cases, the teachers thought the competency was more important than did the professors. Means of the II categories were rankordered for both groups. Differences in rank were nonexistent or slight for most of the items. The three items on which there was a four-point difference in rank were: goalsetting and curriculum development (viewed as more important by the professors), and communication and assessing students' needs (viewed as more important by the teachers).     

The effects of instruction on college nonmajors' conceptions of respiration and photosynthesis

Students in a college nonscience majors' biology course took tests designed to reveal their conceptions of respiration and photosynthesis before and after course instruction. Even though most students had taken at least a full year of biology, serious misconceptions persisted. Most students gave definitions of respiration, photosynthesis, and food which were markedly different from those generally accepted by biologists. These incorrect definitions were associated with more fundamental misunderstandings about how plants and animals function. Most students could not explain how animal cells use either food or oxygen. They understood plants as vaguely analogous to animals, taking in food through their roots instead of mouths. Previous biology instruction seemed neither to improve student performance on the pretest nor to prepare them to master these conceptions during the course. Course instruction did improve student's understanding, but misconceptions persisted for many students. These results raise fundamental questions about the effectiveness of curriculum and instruction in current high school and college biology courses.