Schedule-induced polydipsia contrast in the rat

Schedule-induced polydipsia was studied using a behavioral contrast paradigm. Food pellets were delivered to food-deprived rats on a response-independent FT 1-min schedule. Licking on a tube produced water on a MULT FR 10 FR 10, MULT FR 10 EXT, or MIXED FR 10 EXT for three rats (Experiment 1) and on a MULT VI VI, MULT VI EXT, or MIXED VI EXT schedule for three other rats (Experiment 2). On the FR schedules, rats could drink more water by increasing lick rates, but on the VI schedules the amount of drinking was fixed by the schedule parameters and was relatively unaffected by lick rates. Relative to MULT FR FR, positive polydipsia contrast was clearly demonstrated on MULT and MIXED FR EXT; but relative to MULT VI VI, contrast was not demonstrated on MULT and MIXED VI EXT. These data suggest that polydipsia contrast occurs only if increased licking permits increased drinking.     

A distributed system of educational administration: An international viewpoint

Any educational service is provided through a large number of separated institutions and many decisions are necessarily taken by individual schools, and, indeed, by individual teachers. However, these day-to-day decisions are taken within a framework laid down elsewhere. Power and responsibility in an educational system relate chiefly to the extent and nature of the resources provided, the curriculum and teaching methods, the character and purpose of individual institutions and the internal organization of those institutions. Significant decisions may be taken at national, state, local authority and individual school levels. Cutting across such patterns are employer-employee relationships and agreements negotiated with trade unions. The system of governance and administration of schools in England is seen as a triangle of tension, the three points being central government, local government and individual schools. Reference is made to patterns of curriculum, examinations, supervision and finance, the English approach being compared with practices elsewhere. It is argued that within the constraints imposed by the controlling authority individual schools shouls possess a great deal of flexibility in making their own decisions, including questions of student-staff ratios, allocation of teachers and expenditure of finance. Power and responsibility should not be divorced, but related; this is the logical development of a system of distributed administration.

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Zusammenfassung Jedes Bildungssystem besteht aus einer grossen Zahl separater Institutionen, und viele Entscheidungen müssen von den einzelnen Schulen und sogar den einzelnen Lehrern selbst getroffen werden. Der Rahmen für diese täglich notwendigen Entscheidungen wird jedoch an anderer Stelle festgelegt. Entscheidungsbefugnis und Verantwortung in einem Bildungssystem beziehen sich in der Hauptsache auf den Umfang und die Art der verfügbaren Mittel, auf Curricula und Lehrmethoden, den Charakter und Zweck der einzelnen Institutionen und ihre interne Organisation. Wichtige Entscheidungen können auf Staats-, Landes-, Bezirks- und Einzelschul-Ebene gefällt werden. Über diesen gazen Aufbau hinweg gehen Arbeitgeber-Arbeitnehmer-Beziehungen und Vereinbarungen mit Gewerkschaften. Das Leitungsund Verwaltungssystem für Schulen in England wird als ein Spannungsdreieck dargestellt, dessen drei Ecken die Zentralregierung, die örtlichen Behörden und die Schulen selbst bilden. Verschiedene englische Muster von Lehrplänen, Examen, Aufsich und Finanzen werden aufgezeigt und mit denen anderer Länder verglichen. Dabei wird betont, dass die einzelnen Schulen innerhalb der von der zuständigen Behörde gesetzten Grenzen ein grosses Mass von Entscheidungsfreiheit besitzen sollten, auch in Fragen wie Klassenstärke, Einsatz von Lehrern und Verwendung der Finanzmittel. Machtbefugnis und Verantwortung sollten nicht getrennt, sondern miteinander verbunden sein. Das ist die logische Entwicklung eines Systems aufgeteilter Verwaltung.

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Résumé Tout service d'éducation est doté d'un grand nombre d'institutions distinctes, et, de ce fait, de nombreuses décisions sont prises individuellement par chacune des écoles, aussi bien que par chacun des enseignants. Quoiqu'il en soit, ces décisions prises au jour le jour, le sont dans les limites d'un cadre venant d'ailleurs. Dans un système d'éducation, pouvoir et responsabilité sont surtout liés à l'étendue et à la nature des ressources disponibles, du programme et des méthodes d'enseignement, du caractère et des objectifs de chaque institution, ainsi que de l'organisation interne de ces institutions. Les décisions importantes puevent être prises au niveau des autorités nationales, régionales ou locales, aussi bien qu'à celui de chacun des établissements scolaires. Les relations employeurs-employés, de même que les accords négociés avec les syndicats sont taillés sur le même modèle. En Angleterre, le système de gestion et d'administration des écoles apparait comme un triangle de tension dont les trois sommets sont constitués par le gouvernement central, le gouvernement local et les établissements scolaires eux-mêmes. Il est fait référence à d'autres modèles de programmes, d'examens, de contrôle et de finances, le système anglais étant comparé à ce qui ce fait ailleurs. Il est exposé que dans le cadre des contraintes imposées par l'autorité de contrôle, chaque école devrait posséder une grande marge de flexibilité pour prendre ses propres décisions, comprenant les questions des rapports d'associations d'élèves, les affectations des enseignants et les dépenses financières. Pouvoir et responsabilité ne devraient pas être séparés mais associés, tel est l'évolution logique d'une administration scolaire fonctionnant suivant un système de répartition.

     

Related factors of the MTAI and the 16PF

The Minnesota Teacher Attitude Inventory (MTAI) and the Sixteen Personality Factors Questionnaire (16PF) were administered to 395 undergraduate teachers-in-training. The MTAI and the 16PF were compared using canonical analysis. They contained three related factors accounting for 41% of their total variance. It was concluded that teachers' attitudes toward their pupils are determined in large part by measurable personality traits.     

Maternal social support as a predictor of mother-child stress and stimulation

There is increasing interest in the role of social support in determining risk for child abuse and neglect. The present study assessed the relationship between maternal social support and two areas: stress in the mother-child relationship: and level of stimulation provided in the home. Maternal social support was assessed prenatally and at a two-year follow-up, while the latter variables were compiled at the two-year follow-up. The data were obtained from 38 urban, low SES (80% on public assistance) mothers and their 2-year-old children. Maternal social support correlated positively with level of stimulation and negatively with level of mother-child stress, and was the best predictor of both, relative to any SES, mother or child variables. In addition, high stress, low support mothers provided significantly less stimulation to their children. The theoretical implications for social support as a mediator variable as well as its implications for early identification and prevention efforts in abuse and neglect are discussed.     

AN EXAMINATION OF THE ASSUMPTION THAT THE EQUATING OF PARALLEL FORMS IS POPULATION-INDEPENDENT

Linear conversions were developed relating scores on two recent forms of the homogeneous GRE Quantitative Test (GRE-Q) and the specially constituted heterogeneous GRE Verbal-plus-Quantitative Test (GRE-V+Q), using randomly equivalent groups of about 13, 000 taking each form. Specially defined homogeneous subpopulations were then identified, and conversions between scores on the two forms were again calculated, this time based on l000-case samples drawn at random from the subpopulations. Finally, in order to develop empirical measures of equating error, I00 samples of 1, 000 cases each were drawn at random from the two total groups and used to calculate 100 conversions between scores on the two forms. The conversions based on the specially selected subpopulations were then compared with the total-group conversions and evaluated in terms of the empirical standard errors. The results showed that the conversions for the subpopulations agreed with the total-group conversion quite satisfactorily for the GRE-Q and almost as well for the GRE-V+Q. It was concluded that the data clearly support the assumption of population independence for homogeneous tests, but not quite so clearly for heterogeneous tests.     

Comparing preservice,elementary, and junior high teachers' perceptions of school psychologists: Two decades later

One hundred eighty-one experienced teachers (elementary and junior high), and 189 preservice teachers were surveyed regarding their perceptions of school psychologists. The survey instrument used essentially the same categories as Styles in 1965, including: (a) level of training, (b) effectiveness, (c) qualifications for tasks, and (d) usefulness in specific duties. Analysis of the survey data showed there were significant differences between preservice and experienced teachers' effectiveness ratings of school psychologists on eight tasks typically performed by school psychologists. Significant differences also were found between preservice and experienced teachers on their ratings of school psychologists' qualifications to undertake specific tasks, although almost half of the experienced teachers were unable to rate the effectiveness of school psychologists. There was a small, but significant, negative relationship between the amount of contact with the school psychologist and the perceived effectiveness. Limitations inherent in survey methodology and the need to foster greater teacher awareness of the school psychologist's role are discussed.