The evolution of FM radio: 1941–1946

The following verbatim extracts from FCC Annual, Reports are part of a continuing series published in the Journal of Broadcasting that includes: “The Evolution of Television: 1927–1943” (Summer, 1960); “The Evolution of Television: 1944–1948” (Winter, 1960–61); and “The Evolution of FM Radio: 1935–1940” (Spring, 1961).     

Comparisons of Self‐Efficacy,Mood, Effort,and Hope Between Students with Learning Disabilities and Their Non‐LD‐Matched Peers

The goals of this study were to compare self‐perceptions of self‐efficacy, mood, effort, and hope between 123 adolescents with learning disabilities (LD) and a group of 123 Non‐LD peers, who were matched for their level of academic performance and gender, and to explore the relations between measures of self‐perception and achievement. The results showed that students with LD reported lower academic self‐efficacy and lower social self‐efficacy. They also rated their mood as more negative and reported lower levels of hope and less investment of effort in their academic work. At the same time, no significant differences were found for emotional self‐efficacy in comparison to the Non‐LD peer group. In addition, among students with LD who were successful in their studies, a subgroup continued to report low levels of hope. The results demonstrated that even when the academic performance of students with LD is similar to their Non‐LD peers, their specific and global self‐perceptions continue to reflect their distress. It is not clear if these results represent past difficulties, day‐to‐day struggles, and/or future worries. Resilience models are proposed and research limitations are specified.     

Stability and change in early childhood classroom interactions during the first two hours of a day

Early childhood classrooms support children's learning in a variety of ways. Of critical importance are the interactions teachers have with children. The type and quality of classroom interactions vary and can be grouped into three domains: instructional, organizational, and emotional. The purpose of this study is to examine the extent to which the quality of classroom interactions is stable over time and the extent to which certain types of interactions (e.g., organizational) set the stage for other types of interactions (e.g., instructional) during the first two hours of a typical pre-k day. Classrooms (n = 693) were observed during four contiguous observation cycles (20 min for observation, 10 min for ratings) using the Classroom Assessment Scoring System. Stability estimates from autoregressive models showed the quality of classroom interactions was highly stable. Latent difference score models were then fit to determine how these domains of teacher interactions related with one another over time. Contrary to hypotheses, higher levels of Classroom Organization and Emotional Support were not related to positive changes in Instructional Support. However, the final model indicated that Classroom Organization and Emotional Support were positively related to one another over time. That is, higher levels of Classroom Organization were related to higher levels of Emotional Support at the next observation cycle and vice versa. Implications for the understanding of classroom interactions and the measurement of interactions are discussed.     

The development, validation, and application of the Doctoral Student Connectedness Scale

Student attrition from distance and limited-residency doctoral programs is significantly higher than that from traditional programs. The focus of this paper is the development and application of a survey instrument, the Doctoral Student Connectedness Scale, designed to identify students at risk of dropout. The study focused exclusively on students currently working on their dissertations with results indicating that low feelings of student-to-student and student-to-faculty connectedness in the learning environment may be predictive of departure from the program. This study supports the work of Lovitts (2001) and others who have also recognized connectedness as an integral part of the dissertation experience. Recommendations are made for addressing these issues through various initiatives that administrators, faculty, and students can support including the design and development of a doctoral student community of practice (CoP).     

Modelling pre-service teachers’ perceived usefulness of an ICT-based student-centred learning (SCL) curriculum: a Singapore study

The purpose of this study is to examine the factors that influence pre-service teachers’ perceived usefulness of an Information and Communication Technology (ICT) course that was conducted using the student-centred learning (SCL) approach. In this study, perceived usefulness was used as the dependent variable and perceived competence, course delivery, facilitating conditions and learning environment as independent variables. The results of this study showed that perceived competence and course delivery have direct effects on pre-service teachers’ perceived usefulness of the course, while learning environment and facilitating conditions affect perceived usefulness indirectly. Overall, the results support the hypothesis that the four selected variables in this study affect perceived usefulness and that the resulting model is an adequate fit to the observed relationships among the factors that influenced pre-service teachers’ perceived usefulness of an ICT course.     

The backyard human performance technologist: Applying the development research methodology to develop and validate a new instructional design framework

Development research methodology (DRM) has been recommended as a viable research approach to expand the practice‐to‐theory/theory‐to‐practice literature that human performance technology (HPT) practitioners can integrate into the day‐to‐day work flow they already use to develop instructional products. However, little has been written about how it can be applied in a workplace setting to allow HPT practitioners to consider this research approach for adoption into their own activities. This article provides a real‐world application of the DRM to help close this literature gap. After providing background information to establish the case context, the article presents an overview of how this research approach was applied to an effort to develop and validate a new instructional design framework for potentially training National Aeronautics and Space Administration (NASA) astronauts for deep space exploration missions. The result of this case indicates that this research methodology provides a viable approach that HPT practitioners can integrate into their current practices to provide a practice‐based research baseline to contribute to the practice‐to‐theory/theory‐to‐practice literature.