Searching for momentum in NBA triplets of free throws

ABSTRACT

The literature on momentum is still undecided, with mixed results whether momentum exists or is only perceived to exist (“hot hand fallacy”). We explore whether momentum exists by looking at cases in which a basketball player has three consecutive free throws. A free throw is a well-defined task executed in a stable environment, allegedly giving momentum optimal chances to occur. Taking 14 NBA seasons we collected over 4500 three-free-throw sets (triplets). We obtained the outcomes of the shots as well as some additional variables about the player and the game: the player’s average free-throw percentage, home or away, and the game score and the quarter when the free throws were attempted. We first analyse the hit rates in the three shots and then proceed to regression analysis that also controls for the abovementioned variables. We address several concerns raised in the literature. All comparisons and analyses yield the same conclusion that there is no evidence for momentum in the data.     

Organizing libraries for nonreaders

Many nursery schools and kindergartens manage to accumulate hundreds of books without ever having a library. While the same worn titles grow old on classroom shelves, treasures often lie buried in random corners or in supply closets. More often, all the books are crammed together haphazardly on shelves in a teachers' room where no child ever sees them and no teacher can find what he or she is looking for. Dian G. Smith is a freelance writer and author of My New Baby and Me: A First-Year Record Book for Big Brothers and Sisters (Scribner, 1986). Alexandra Azar is an Associate Instructor for the University of Utah, Continuing Education, in Library Science.     

Response to “violence in our schools: Implications for teacher education,” volume 35 number 3

Dr. Morgan discusses the recommended content of economics courses, describes several significant projects in economics education, and provides sources from which teachers may obtain complete reports of these projects.     

An investigation of parents' attitudes and the communication skills of their deaf children

The reciprocity and consequences of parent-child interactions are an important subject of inquiry in child development literature. The majority of studies on deaf children with hearing parents focus on differences in parent-child interactions, which emanate from a number of factors including parental attitudes toward deafness and acceptance of alternative modes of communication. The purpose of this study was to investigate the relationship between parental attitudes toward deafness and the communication skills of their hearing-impaired children. Whereas the majority of researchers in interactional studies have focused on mothers, both parents were included in this investigation. Significant correlations were found between fathers' scores on the Attitude to Deafness Scale and the language comprehension scores of their deaf children. No significant differences in attitudes were found between mothers and fathers. Similarly, no significant differences were found between the parents of boys and the parents of girls.     

Attitudes Toward Deafness and Security of Attachment Relationships Among Young Deaf Children and Their Parents

This study investigated deaf children's "security of attachment" relationships with their hearing parents and the relationship of parental attitudes toward deafness. Subjects included 30 deaf children and their hearing parents. The children ranged in age from 20 to 60 months. Instruments used included the Attachment Q-Set, the Attitudes to Deafness Scale, and parental interviews. As a group there were no differences between security of attachment scores of deaf children toward either of their parents; however, there were marked differences within individual dyads of mother-child/father-child relationships. In addition, negative correlations were found between parents' attitudes towards deafness scores and their deaf children's security of attachment scores. Implications for the field include the importance of inclusion of fathers in attachment studies and fathers' active participation in early intervention programs. The relationship between parental attitudes toward their children's disability (deafness) and attachment relationship provides further evidence for the critical role of early intervention in the development of children with special needs.     

Features in children's counting books that lead dyads to both count and label sets during shared book reading

This study examined how book features influence talk during shared book reading. We used data from a study in which parent–child dyads (n = 157; child's M_age = 43.99 months; 88 girls, 69 boys; 91.72% of parents self-reported as white) were randomly assigned to read two number books. The focus was comparison talk (i.e., talk in which dyads count a set and also label its total), as this type of talk has been shown to promote children's understanding of cardinality. Replicating previous findings, dyads produced relatively low levels of comparison talk. However, book features influenced the talk. Books containing a greater number of numerical representations (e.g., number word, numeral, and non-symbolic set) and a greater word count elicited more comparison talk.     

Stress and Social Support in Fathers and Mothers of Young Children with and without Disabilities

This study compared perceived stress and social support in fathers and mothers of children with and without disabilities. The sample consisted of 15 families with special needs children and 15 with children with no known handicapping conditions. The Parent Stress Index and a parental questionnaire were used. Findings indicated higher perceived stress in families with special needs children. Within these families no significant differences were found between fathers' and mothers' perceived stress. Significant negative correlations were found between families' stress and support received from fiends and relatives. Negative correlations were found for mothers' stress in Child Domain and support from the community. Implications include planning for active engagement of fathers in all areas of service delivery in early intervention programs, including encouragement for more participation in programming; opening a direct line of communication through designing tailored workshops, support groups and counseling; recognizing fathers' strengths beyond their traditional roles; and viewing them as an additional emotional source of support for mothers.     

The effect of extracurricular activities on academic performance in secondary school: The case of Azerbaijan

Extracurricular activities play an important role in the school lives of students. To understand this effect, the authors of this article consider public schools in Azerbaijan and analyse the effect of extracurricular activities on students’ academic performance. They conducted a study investigating three groups of extracurricular activities: sports, fine arts and student clubs. For data on academic performance, they used results of a centralised state school examination which assesses students in two subjects: language of instruction (either Azerbaijani or Russian) and mathematics. The results of this study show that some extracurricular activities have a positive effect on students’ academic performance, while others show no effect. Moreover, the authors consider the number of different extracurricular activities a student takes part in and analyse the significance of this number in predicting student success.

     

Testing a Model of Intercultural Willingness to Communicate based on Ethnocentrism,Ambiguity Tolerance and Sensation Seeking: The Role of Learning English in Iran

The present study aimed at testing a model of intercultural willingness to communicate based on ethnocentrism, ambiguity tolerance and sensation seeking between English and non-English major university students in Iran. A significant difference was found between the two groups on ethnocentrism and the results showed that the model fit the data adequately. Ethnocentrism was the strongest predictor of intercultural willingness to communicate for both groups. Sensation seeking was a significant predictor of intercultural willingness to communicate only for the non-English major university students. Moreover, sensation seeking and ambiguity tolerance were significant predictors of ethnocentrism.