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Phillip J. Mohr 《Communication Studies》2013,64(4):342-351
This article examines two implicit assumptions on which the family viewing concept appears to be based: (1) children's viewing will subside after the end of the family viewing period, and children will be less likely to be exposed to later, more “mature” programming; (2) broadcasters can and do provide programs toward which children and parents share preferences and which are “appropriate” for the family viewing period (6:00‐8:00 p.m. CST, 7:00‐9:00 in other time zones). Data gathered in a 1976 survey confirmed the first assumption. However, while the peak period of children's viewing occurred between 6:30 and 8:00 p.m., substantial numbers of the children continued to view television beyond the family viewing period. Less consistent support was found for the second assumption. Above‐average percentages of both parents and children considered thirty‐one of sixty‐eight programs listed on the questionnaires to be “favorites” or “all right,” and nineteen of the thirty‐one were broadcast during the family viewing period. While parents and children may share attitudes toward certain programs, however, it does not necessarily follow that parents consider those programs appropriate for their children. The results of the survey suggest the need for further study of what constitutes “appropriate” programming for family viewing. 相似文献
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Physical and metabolic demands of training and match-play in the elite football player 总被引：2，自引：0，他引：2
In soccer, the players perform intermittent work. Despite the players performing low-intensity activities for more than 70% of the game, heart rate and body temperature measurements suggest that the average oxygen uptake for elite soccer players is around 70% of maximum (VO(2max). This may be partly explained by the 150 - 250 brief intense actions a top-class player performs during a game, which also indicates that the rates of creatine phosphate (CP) utilization and glycolysis are frequently high during a game. Muscle glycogen is probably the most important substrate for energy production, and fatigue towards the end of a game may be related to depletion of glycogen in some muscle fibres. Blood free-fatty acids (FFAs) increase progressively during a game, partly compensating for the progressive lowering of muscle glycogen. Fatigue also occurs temporarily during matches, but it is still unclear what causes the reduced ability to perform maximally. There are major individual differences in the physical demands of players during a game related to physical capacity and tactical role in the team. These differences should be taken into account when planning the training and nutritional strategies of top-class players, who require a significant energy intake during a week. 相似文献
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Kerry S. Lassiter T. Darin Matthews Nancy L. Bell Carrie M. Maher 《Psychology in the schools》2002,39(5):497-506
Ninety‐four college students were administered the GAMA and KAIT. GAMA IQs were significantly and moderately correlated with KAIT Fluid, Crystallized and Composite IQs, supporting the convergent validity of this instrument. Although significant correlations between measures emerged and nonsignificant differences were found between mean scores across these instruments, GAMA IQ scores did not accurately predict KAIT Composite IQ scores when GAMA IQ scores were compared to KAIT Composite IQs. Similarly, when the sample was divided into two groups by ability level, GAMA IQs accurately estimated the intelligence for individuals of Average and Below Average intelligence, but underestimated the KAIT Composite IQ scores by 4 points for the Above Average group. Implications of the findings are discussed and suggestions for future research are provided. © 2002, Wiley Periodicals, Inc. 相似文献
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The present investigation examined the validity of the Comprehensive Test of Nonverbal Intelligence (CTONI) with the Woodcock‐Johnson III Tests of Cognitive Abilities (WJ‐III COG) by administering these instruments in counterbalanced order to 60 college students. Results indicated that the mean CTONI NIQ score was not significantly different from the mean WJ‐III COG General Intellectual Ability (GIA) score. However, mean score differences were found between the CTONI NIQ and the WJ‐III COG Verbal Ability, Thinking Ability, Comprehension‐Knowledge, and Fluid Reasoning cluster scores. Although the correlations between the CTONI and the WJ‐III COG cluster scores were generally of small magnitude, the CTONI Geometric Nonverbal IQ composite score demonstrated construct specificity, whereas the CTONI Pictorial Nonverbal IQ scale did not. The implications of the findings are discussed and practitioners are asked to use caution when using this instrument to assess the fluid reasoning abilities of college students. © 2007 Wiley Periodicals, Inc. 相似文献