Environmental Education as a Model for Constructivist Teaching

Abstract

Current literature related to science instruction often includes a discussion of the philosophy of constructivism. The authors describe four main components of a constructivist science lesson or unit. A review of commonly used environmental education materials was conducted to look for these components. Parallels between teaching strategies used in environmental education and constructivist methods are discussed.     

Sexual Assault Is Just the Tip of the Iceberg: Relationship and Sexual Violence Prevalence in College Students

With the advent of the “Dear Colleague” letter in 2011, higher education institutions have become focused on sexual assault and related policies, procedures regarding offenses, and prevention education. Institutions should consider using this spotlight on interpersonal dynamics to increase awareness about other types of relationship violence that may be more common. This secondary data analysis of 72,067 U.S. college students indicates stalking, emotional abuse, and physical abuse are very common. Along with relationship difficulties in general, these forms of relational violence occur more frequently than sexual assault. Implications for counseling and mental health services are provided.     

Comparing para-rowing set-ups on an ergometer using kinematic movement patterns of able-bodied rowers

While numerous studies have investigated the biomechanics of able-bodied rowing, few studies have been completed with para-rowing set-ups. The purpose of this research was to provide benchmark data for handle kinetics and joint kinematics for able-bodied athletes rowing in para- rowing set-ups on an indoor ergometer. Able-bodied varsity rowers performed maximal trials in three para-rowing set-ups; Legs, Trunk and Arms (LTA), Trunk and Arms (TA) and Arms and Shoulders (AS) rowing. The handle force kinetics of the LTA stroke were comparable to the values for able-bodied literature. Lumbar flexion at the catch, extension at the finish and total range of motion were, however, greater than values in the literature for able-bodied athletes in the LTA set-up. Additionally, rowers in TA and AS set-ups utilised more extreme ranges of motion for lumbar flexion, elbow flexion and shoulder abduction than the LTA set-up. This study provides the first biomechanical values of the para-rowing strokes for researchers, coaches and athletes to use while promoting the safest training programmes possible for para-rowing.     

Methodological considerations in research on the prevalence of child sexual abuse

Recent studies with nonclinical populations have yielded widely varying estimates of the prevalence of child sexual abuse. This paper focuses on four representative studies, describing how differences in methodology and sample characteristics may contribute to the variation in prevalence rates. Two aspects of data collection appear to be the most significant factors accounting for discrepant findings. First, the use of face-to-face interviews is associated with much higher prevalence rates than the use of self-administered questionnaires. Second, higher prevalence rates are reported in studies that use multiple questions to ask about specific types of abusive sexual behavior. Variation in the age range of subjects is an additional factor that may also have an effect on prevalence rates. The evidence reviewed points to several aspects of methodology and sample characteristics that do not seem to influence prevalence findings. These are the use of random sampling techniques, the area of the country in which the study is conducted, the educational level of subjects, and the ethnic composition of the sample.     

Differential Item Functioning in Biodata: Opportunity Access as an Explanation of Gender- and Race-Related DIF

Investigations of differential item functioning (DIF) have been conducted mostly on ability tests and have found little evidence of easily interpretable differences across various demographic subgroups. In this study, we examined the degree to which DIF in biographical data items referencing academically relevant background, experiences, and interests was related to differences in judgments about access to these experiences by members of different gender and race subgroups. DIF in the location parameter was significantly related (r = –.51, p < .01) to gender differences in perceived accessibility to experience. No significant relationships with accessibility were observed for DIF in the slope parameter across gender groups or for the slope and location parameters associated with DIF across Black and White groups. Practical implications for use of biodata and theoretical implications for DIF research are discussed.     

Lower extremity muscle function of front row rugby union scrummaging

A rugby scrum’s front row must act uniformly to transfer maximal horizontal force and improve performance. This study investigated the muscle activation patterns of lower extremity muscles in front row forwards during live and machine scrums at professional and amateur levels. Electromyography was collected bilaterally on vastus lateralis, rectus femoris and gastrocnemius muscles of 75 male rugby prop players during live and machine scrums. ANOVAs compared muscle reaction time, rate of change in muscle amplitude and muscle amplitude between groups and conditions. Cross-correlation analysis explored muscle synchronicity. There were significantly greater rates of change in each muscle amplitude in professional players than amateur players. Additionally, there was significantly quicker muscle reaction time in all muscles, and greater amplitude in vastus lateralis and gastrocnemius, during the live scrum vs. machine condition. The professional props produced more synchronised muscle activation than amateur players and all players produced more synchronised muscle activation against the scrum machine vs. live scrummage. The results indicate a higher skill proficiency and muscle synchronicity in professional players. While scrum machine training is ideally suited for functional muscle strengthening during practice, to truly simulate the requirements of the scrum, training should incorporate the live situation as much as possible.