Formal reasoning ability and misconceptions concerning genetics and natural selection

Students often hold misconceptions about natural phenomena. To overcome misconceptions students must become aware of the scientific conceptions, the evidence that bears on the validity of their misconceptions and the scientific conceptions, and they must be able to generate the logical relationships among the evidence and alternative conceptions. Because formal operational reasoning patterns are necessary to generate these logical relationships, it was predicted that, following instruction, formal operational students would hold significantly fewer misconceptions than their concrete operational classmates. To test this hypothesis 131 seventh-grade students were administered an essay test on principles of genetics and natural selection following instruction. Responses were categorized in terms of the number of misconceptions present. The number of misconceptions was compared to reasoning ability (concrete, transitional, formal), mental capacity (<6, 6, 7), verbal intelligence (low, medium, high), and cognitive style (field dependent, intermediate, field independent). The only student variable consistently and significantly related to the number of misconceptions was reasoning ability; thus, support for the major hypothesis of the study was obtained.     

Scholastic Aptitude Test preparation for the adolescent dyslexic

Residual signs characteristic of a specific language disability, such as vocabulary deficits, trouble differentiating between literal and figurative words, difficulty paraphrasing a reading selection, and problems with abstract reasoning make it arduous for dyslexic adolescents to demonstrate their maximum potential on the verbal section of the Scholastic Aptitude Test. This paper illustrates ways in which SAT skills can be enhanced through a structured program of vocabulary development, an understanding of test taking strategies for specific SAT questions, and the learning of a pattern of analysis to improve reading comprehension. It includes case studies, as well as a discussion of the types of special test arrangements available for dyslexic students.     

Reading and spelling difficulties in high school students: Causes and consequences

Basic skills in reading and spelling and supporting metalinguistic abilities were assessed in ninth and tenth grade students in two school settings. Students attending a private high school for the learning disabled comprised one group and the other comprised low to middle range students from a public high school. Both the LD students and the regular high school students displayed deficiencies in spelling and in decoding, a factor in reading difficulty that is commonly supposed to dwindle in importance after the elementary school years. Treating the overlapping groups as a single sample, multiple regression analysis was used to investigate the contribution of nonword decoding skill and phonological and morphological awareness to spelling ability. The analysis revealed that decoding was the major component, predicting about half of the variance in spelling. The effect of phonological awareness was largely hidden by its high correlation with decoding, but was a significant predictor of spelling in its own right. Morphological awareness predicted spelling skill when the words to be spelled were morphologically complex. An additional study showed that differences in decoding and spelling ability were associated with differences in comprehension after controlling for reading experience and vocabulary. Even among experienced readers individual differences in comprehension of text reflect efficiency of phonological processing at the word level.     

Survival responses to incest: Adolescents in crisis

Twenty-seven incest victims, aged 12-18, responded to their experiences with self-destructive behaviors such as substance abuse, suicide attempts, perfectionism, isolation, or depression in attempts to alleviate stress or assert some control over helplessness created by the incest. Therapy focused on the premise that such adolescent behaviors are logical and predictable survival responses rather than simply clues to sexual abuse. Treatment goals included establishing trust, helping the victim re-define his or her role in the incest, view destructive behaviors as predictable responses, and understand that present behaviors are a continuation of these past survival responses. Such self-awareness encourages the adolescent to better manage or discontinue now inappropriate behaviors.     

The effects of community violence on children in Cape Town, South Africa

OBJECTIVE: The primary objective of the study was to investigate the relationship between exposure to community violence (neighborhood, school, police, and gang violence) and psychological distress in a sample of children living in the Cape Town, South Africa area. Another objective was to identify variables that moderate and mediate the relationship between exposure to community violence and psychological distress. METHODS: Face-to-face interviews were conducted with 185 children between the age of 8 and 13 from five Cape Town Township schools. Structured scales were used to measure exposure to several forms of community violence, family functioning, social support, perceptions of safety, and "unknown" locus of control. RESULTS: Exposure to all forms of violence was extremely high and resulted in substantial psychological distress. Perceived safety functioned as a mediating variable for all forms of violence. Unknown locus of control, social support, family organization, and family control moderated the effects of exposure to certain kinds of violence. Surprisingly, exposure to murder was not related to psychological distress, suggesting a possible "numbing" effect of extreme forms of violence. Hearing about violence from others had almost the same effect as actually witnessing it. Older children had witnessed more violence and were experiencing more distress, suggesting an "exposure accumulation" effect. CONCLUSIONS: The findings suggest the importance of a child's ability to feel safe in reducing the distress that occurs as a result to exposure to violence. Parents and schools can help children cope, but there appear to be limits. Early intervention, before maladaptive coping mechanisms have developed, also appears to be important.     

Faculty perspectives and practice in an Urban Community College

This article explores faculty perspectives and practice at one Urban Community College in the United States. Data were gathered as part of a larger ethnography on the culture which lower class black students produce in an urban institution. My goal here is to describe elements of faculty culture, explore reasons why faculty culture takes the shape and form that it does, and discuss the ways in which this culture may be linked to institutional outcomes. In so doing. I offer a framework through which the structural genesis of faculty-student conflict and the relationship between faculty culture and institutional outcomes may be viewed.     

Information recall of younger and older skilled athletes: The role of display complexity,attentional resources and visual exposure duration

This study was concerned with the interactive role of experience of athletic skill with other relevant environmental variables (display complexity, attentional resources, exposure time of stimuli) on perception (recall) of structured handball game situations. Nineteen experienced (older) and 19 less experienced (younger) handball players were assigned randomly either to ball‐bouncing (diverted attention) or to calm seated (focused attention) conditions. In each of the two conditions, the subjects were exposed to a total of 36 slides containing 2–3, 5–6 and 8–10 players. Eighteen slides were exposed for 0.5 s and 18 for 1.0 s. All the slides contained structured defence and offence situations. Recall scores were subjected to repeated‐measures ANOVA using attention condition and age as between‐subject factors and task complexity and exposure duration as within‐subject factors. The results showed that the recall of less experienced players deteriorated more than the recall of more experienced players following exposure to complex displays (≥ 8 players) while engaging in a secondary task (bouncing). The findings suggest that research paradigms should be applied in the field of sport which share both ecological validity and a potential to discover the cognitive substrates underlying experience and age in skilled motor performance.     

Baumgartner's Modified Pull-Up Test For Male and Female Elementary School Aged Children

Abstract

Nineteen college men and women (aged 18–23 yrs, × = 21.1) were studied to ascertain the force-time components of a rapid maximal voluntary isometric contraction (MVC) for ankle dorsiflexors, knee extensors, elbow flexors, wrist flexors and hand grip. Standardized isometric strength testing protocol was used. After a practice period subjects were instructed to make an MVC without jerking and as quickly as possible, for each of the muscle actions noted above. Force readings were taken from a load cell assembly through an analogue-to-digital converter and analyzed to yield time values for MVC, 3/4 MVC, 1/2 MVC, and 1/4 MVC. The results indicated significant differences (p < .01) between the responses of the men and women, with the women reaching full MVC more rapidly than the men. Also, there were significant differences among the five muscle groups tested, with the wrist flexor muscle group developing MVC most quickly, while the knee extensors took the longest time to full MVC. Based upon these data it may be concluded that the time to full MVC differs between men and women, and also that the time to full MVC differs among the five muscle groups tested in this experiment.