Abusive head trauma in Maine infants: medical,child protective,and law enforcement analysis

OBJECTIVE: To collect and compare the results of medical, child protective, and law enforcement evaluation of a sample of Maine children who were victims of abusive head trauma (AHT) in order to describe the clinical and evaluative characteristics as they relate to victims, families and perpetrators of such trauma and to improve the professional response to AHT in Maine.METHOD: Retrospective chart review of medical, child protective, and law enforcement records of all AHT victims admitted to two tertiary care hospitals in Maine or seen by the state medical examiner from 1991 to 1994.RESULTS: Nineteen children (age range 2 weeks to 17 months) were identified as victims of AHT (out of a total of 94 head trauma admissions) accounting for 20 hospitalizations during the study period. There was a history of prior injury in 30%, history of prior medical evaluations for possibly abuse related problems in 65%, while, on presentation, 75% had evidence or history of prior injury. The hospitals notified child protective services (CPS) in all 20 cases and correctly identified abuse in 18 (90%). Parental risk factors for abuse identified in CPS records included substance abuse (53%), domestic violence (42%), criminal history (32%), unrealistic expectations (42%), and attachment problems (32%). However, risk factors were inadequately assessed in 53% of homes. Law enforcement identified a likely perpetrator in 79% of cases and in the majority the identified suspect was the father. In the 15 cases where a perpetrator was identified by law enforcement, that person was alone with the child at symptom onset in 14 (93%).CONCLUSIONS: The medical response, at least at the inpatient level, was generally well done with regard to suspicion and reporting. Cases are possibly being missed at the outpatient level. Child protective risk assessment was limited overall yet in a third of the homes where AHT occurred, few if any risk factors were present to aid in identification and prevention. Law enforcement results suggest that a primary suspect for AHT is the caretaker alone with the child at the time of symptom onset.     

Effect of group size on avoidance learning in zebra fish,Brachydanio rerio (Pisces: Cyprinidae)

The purpose of this study was to investigate the effect of density of fish on the rate of avoidance learning in a schooling fish. Naive adult zebra fish (Brachydanio rerio) were trained in a two-way aquatic shuttlebox, in isolation, in groups of two, or in groups of five. The number of trials to reach progressively more exacting levels of performance (1, 2, 3, … ,9 consecutive correct avoidance responses on 2 successive days), was used to quantify the rate of learning for individuals in the three groups. Using this measure, individuals in groups of five reached any given level of performance in fewer trials than individuals tested alone, which in turn reached the progressive criteria in fewer trials than individuals tested in pairs. In addition, the mean latency of response to the conditioned stimulus for individuals in groups of five was significantly lower than for individuals tested alone or in groups of two by Day 3 of the experiment. The rate of learning in zebra fish schools at these densities may be due to either a balance between imitation learning and conflict-inhibition among the fish or the elicitation of different behavioral responses by shock, depending upon environmental stimuli.     

Issues in phonological awareness assessment

Awareness of the internal phonological structure of words is a causal factor in success with the alphabetic principle in word recognition. However, findings with the Lindamood Auditory Conceptualization (LAC) Test reveal 25–30% of the population show deficiency in a subtle component of phonological awareness termed comparator function. We argue that this comparator function—an ability to hold the phoneme and/or syllable segments of two phonological structures in mind and compare and represent any variations in the number, identity, or order of their segments—is a primary sensory-cognitive function underlying the secondary function of self-correction in word recognition and spelling. And since word recognition correlates highly with comprehension, comparator function also indirectly impacts this basic purpose for reading. We suggest that the needs of many individuals, including educators themselves, for development and refinement of phonological awareness/comparator function may be misdiagnosed and underaddressed unless more sensitive measures of phonological awareness are used. The consequence of inadequate assessment/remediation of these deficiencies in educators is that they may be less able to assess and address these deficiencies in their students. Standard phonics instruction is known to be ineffective in developing phonological awareness for many individuals. However, phonological deficits can be addressed both preventively and remedially using procedures that are fundamentally different from typical phonics instruction.     

Teaching Contemporary Physics Topics Using Real-Time Data Obtained via the World Wide Web

As a teaching tool, the World Wide Web (WWW) is unprecedented in its ability to transmit information and enhance communication between scientist and student. Just beginning to be developed are sites that actively engage the user in the learning process and provide hands-on methods of teaching contemporary topics. These topics are often not found in the classroom due to the complexity and expense of the laboratory equipment and the WWW is an ideal tool for overcoming this difficulty. This paper presents a model for using the Internet to teach high school students about plasma physics and fusion energy. Students are given access to real-time data, virtual experiments, and communication with professional scientists via email. Preliminary data indicate that student collaboration and student-led learning is encouraged when using the site in the classroom. Scientist/student mentoring is enhanced with this form of communication.     

Reading vocabulary influences in phonological recoding during the development of reading skill: a re-examination of theory and practice

Children’s skill at recoding graphemes to phonemes is widely understood as the driver of their progress in acquiring reading vocabulary. This recoding skill is usually assessed by children’s reading of pseudowords (e.g., yeep) that represent “new words.” This study re-examined the extent to which pseudoword reading is, itself, influenced by orthographic rimes (e.g., eep) of words of the child’s reading vocabulary, during the development of reading skill. In Study 1, children with word reading levels of 6–10 years read matched pseudowords that do and do not share an orthographic rime with words of their reading vocabularies. Study 2 was conducted to further examine such a comparison for children of the 6- to 8-year word reading levels. There was a small and constant advantage of shared lexical orthographic rimes for children with reading levels 6–8 years but from 8 to 10 years that advantage increased significantly, as expected by Ehri’s phase account of word reading development. The pseudoword reading of children learning to read English involves use of lexical orthographic components as well as context-free recoding of graphemes to phonemes. This implies a qualification to the common interpretation of pseudoword reading as a measure of context-free grapheme–phoneme recoding. Such a measure should use selected pseudowords that do not share orthographic rime units or other multigrapheme components with words of the children’s reading vocabularies.     

Instructional Design as Critical and Creative Thinking: A Journey Through a Jamestown-Era Native American Village

The role of critical and creative thinking has been debated within the field of instructional design. Through an instructional design and development project we have identified how critical and creative thinking are essential to the instructional design process. This paper highlights a recent project focused on a virtual Native American village and the development of supporting instructional materials. The materials combine instruction on content-area material, technology and critical and creative thinking skills. Our concept of critical and creative thinking skills is guided by a model that includes idea generation, reflective judgment, attitudes and dispositions and self-regulation. Through the process of designing instruction to teach critical and creative thinking skills, we recognized that these critical and creative thinking skills are essential in the design process.     

孟买的圣诞节

We arrived in Bombay early in December, all agog to see the wonders of one of India principal cities and looking ahead to visiting Delhi, Agra and the Taj Mahal, even the Khyber Pass, Afghanistan and Karachi. We accomplished only the first of these. After one night in Bombay we awoke to the news that India and Pakistan were at war.     

Spoon Feeding Leads to Regurgitation: a better diet can result in more digestible learning outcomes

It is common to hear teachers claim that their students expect to be spoon fed and are only capable of regurgitating information they have been fed. Their curricula reflect this belief and the outcome is a self‐fulfilling prophecy—the students dutifully regurgitate to the best of their ability to fulfill assessment requirements. We present a case study of a course based upon this belief, but provide evidence to show that the assumption was not true at all. When an alternative curriculum stressing independent learning and student‐centred approaches was developed, the students were not only capable of more meaningful learning approaches, they actually preferred them—even if they did at times work harder. We discuss the aspects of course design which contributed to encouraging students to use a deep approach to learning.