Retrospective and prospective short-term memory in delayed response tasks in rats

Separate groups of rats were trained and tested on asymmetrically and symmetrically reinforced successive delayed matching-to-sample (DMTS) or delayed discrimination (DD) tasks in Experiment 1. Each rat received training and testing on symmetrically reinforced DMTS and DD tasks in Experiment 2. The only difference between each task was that the rats had to respond correctly to a light or tone test stimulus, S₂, if it matched a light or tone sample stimulus, S₁, in DMTS, but could respond to either S₂ if S₁ had been a particular stimulus in DD. Only correct leverpresses were reinforced in the asymmetrically reinforced version of each task. Both correct presses and correct omissions were reinforced in the symmetrically reinforced version of each task. Response biases to leverpress during tests for delayed responding to S₁ were reduced in both symmetrically reinforced tasks, but only in the DD task did such contingencies produce consistently poorer performance in responding to either S, in Experiment 1. Declines in accuracy of performance that occurred in both experiments were greater to the visual than to the auditory S₁ only in the DMTS tasks with increased intervals between S₁ and S₂. A third experiment, in which rats had to respond to S₂ if it matched S₁ (DMTS) or if S₂ mismatched S, (DMmTS), was carried out. Modality of S₁ similarly affected accuracy of delayed responding in each task, as in the first two experiments. Methodological and theoretical implications of these results are discussed in terms of Honig and Thompson’s (1982) dual-process theory of working memory.     

Active- and passive-avoidance learning in inbred mice: Transfer of training effects

The performance of four groups of mice of two genotypes (DBA/2J and C57BL/6J) was observed in two avoidance situations. Two groups, one of each strain, were given a maximum of 30 conditioning trials in an active avoidance situation followed by a maximum of 30 trials in a passive avoidance situation. The other two groups, one of each strain, were given passive avoidance conditioning first, followed by active avoidance conditioning. Positive transfer of training was observed in both genotypes for mice that received active avoidance conditioning prior to passive avoidance conditioning. Little or no transfer was observed from passive to active avoidance in either strain.     

Comparison of Students' Knowledge Structure Coherence and Understanding of Force in the Philippines,Turkey, China,Mexico, and the United States

This study investigates the ongoing debate in the conceptual change literature between unitary and elemental perspectives on students' knowledge structure coherence. More specifically, the current study explores two potential explanations for the conflicting results reported by Ioannides and Vosniadou (2002 Ioannides, C. and Vosniadou, S. 2002. The changing meanings of force. Cognitive Science Quarterly, 2(1): 5–62.  [Google Scholar])and diSessa, Gillespie, and Esterly (2004 diSessa, A. A, Gillespie, N. and Esterly, J. 2004. Coherence versus fragmentation in the development of the concept of force. Cognitive Science, 28: 843–900. [Crossref], [Web of Science ®] , [Google Scholar]) in terms of differences in coding schemes and differences in student populations. The current study addresses these questions by applying the coding schemes from both studies to interviews with 201 students drawn from the United States, the Philippines, Turkey, China, and Mexico. The analyses focus first on the coding schemes, suggesting that differences in coding schemes seem unlikely to account for the differences in the original studies. The analyses then focus on potential differences between student populations, suggesting that some differences exist in terms of consistency and meanings that might result from language, culture, or educational systems, but that these differences are too small to account for the radical differences in the findings of the original studies. Two additional explanations are then proposed and explored involving the instruments and the epistemological stances invoked for the students. Overall, the results align more closely with the findings of diSessa, Gillespie, and Esterly (2004 diSessa, A. A, Gillespie, N. and Esterly, J. 2004. Coherence versus fragmentation in the development of the concept of force. Cognitive Science, 28: 843–900. [Crossref], [Web of Science ®] , [Google Scholar]). [Supplemental materials are available for this article. Go to the publisher's online edition of Journal of the Learning Sciences for the following free supplement: Coding Schemes and Rules.]     

Multilevel analysis of student civics knowledge scores

Compositional effects of scholarly culture classroom/school climate on civic knowledge scores of 9th graders in the United States were examined using the International Association for the Evaluation of Educational Achievement (IEA) 1999 Civic Education Study data. Following Evans et al. (2010 Evans, M. D. R., Kelley, J., Sikora, J., &; Treiman, D. J. (2010). Family scholarly culture and educational success: Books and schooling in 27 nations. Research in Social Stratification and Mobility, 28, 171–197.[Crossref], [Web of Science ®] , [Google Scholar], 2014 Evans, M. D. R., Kelley, J., &; Sikora, J. (2014). Scholarly culture and academic performance in 42 nations. Social Forces, 92, 1573–1605.[Crossref], [Web of Science ®] , [Google Scholar]), we conceived that the number of books at home, referred to as the home literacy score by IEA, can be an index of scholarly culture of the student's home, and its aggregated average constitutes scholarly culture of the classrooms/schools. The results obtained through multilevel analysis indicated that there were indeed large unique compositional effects and its effect size was comparable to that of mean parent education, individual level scholarly culture, and parent education. Implications of the results in terms of educational policy were discussed.     

Student Perceptions of Autonomy-Supportive Instructional Interactions in the Middle Grades

Autonomy support in classrooms is believed to coordinate students' inner motivational resources in ways that enhance student engagement (e.g., Jang, Kim, &; Reeve, 2012 Jang, H., Kim, E. J., &; Reeve, J. (2012). Longitudinal test of self-determination theory's motivation mediation model in a naturally occurring classroom context. Journal of Educational Psychology, 104(4), 1175–1188. Retrieved from http://dx.doi.org/10.1037/a0028089[Crossref], [Web of Science ®] , [Google Scholar]). Yet, to our knowledge, no study has investigated student-generated interpretations of the motivational significance of their teachers' autonomy-supportive practices. Interpretations gathered from students' responses to video clips of their own teacher were studied with a diverse sample of students (N = 59, 50.8% male, 64.4% African American) in six urban classrooms from fourth- to eighth-grade class sections. Through this method of cued video response, we explore whether or not students experience the significance of autonomy-supportive instructional events or interactions as motivational theory predicts. Our results suggest that consideration of the social and relational features of the classrooms within which teachers enact autonomy support may identify influential contextual factors relevant to how and why autonomy support is linked to positive outcomes.     

The Humanities vs. Careerism

ABSTRACT

Integrating research in the classroom experience is recognized as potentially important in enhancing student learning (Price 2001 Price, J. N.. 2001. “Action Research, Pedagogy and Change: The Transformative Potential of Action Research in Pre-Service Teacher Education.” Journal of Curriculum Studies 33 (1): 43–74.[Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]; Schmid 1992 Schmid, T. J. 1992. “Classroom-Based Ethnography: A Research Pedagogy.” Teaching Sociology 20 (1): 28–35.[Crossref], [Web of Science ®] , [Google Scholar]). This article asks if student integration as research subjects augments their learning about political science. A quasi-experimental project focused on media usage, construction, and influences on the political context of election competition finds that participation as research subjects fostered increased awareness among students of their own media usage, of media effects on politics and of politics in general. Findings also suggest that this process of learning happens within the context of students' pre-existing ideological frameworks despite experimental controls over ideological exposure.     

Strain-dependent sexual dimorphism in the extinction of conditioned taste aversion in mice

Sucrose aversions were induced by lithium chloride toxicosis in 9-week-old male and female mice of the C57BL/6J and DBA/2J strains. Under conditions of ad-lib access to fluids which required a long interval between the sucrose and toxicosis, the conditioned aversions were relatively weak when compared with the sucrose consumption of saline-injected controls. The aversions extinguished rapidly within all groups. Contrary to earlier reports in rats, no sexual dimorphism in extinction rate was observed in this paradigm. When a fluid-deprivation schedule was implemented in the conditioning procedure to shorten the interval between taste experience and toxicosis, strong aversions were noted; yet relatively fast extinction under ad-lib conditions occurred in all groups except male DBA/2J mice. No sexual dimorphism was observed in mice of the C57BL/6J genotype, even when two pairings between sucrose and toxicosis were administered.     

A novel organosilicon-based ionic plastic crystal as solid-state electrolyte for lithium-ion batteries

A novel organosilicon-based ionic plastic crystal, N,N,N,-diethylmethyl-N-[(trimethylsilyl)methyl]ammonium bistrifluoromethane sulfonimide ([DTMA][TFSI]) was designed and synthesized as solid-state electrolyte for lithium-ion batteries. The chemical structure and the physical and electrochemical properties were characterized in detail. The ionic conductivity of [DTMA][TFSI] was improved significantly by doping with lithium oxalyldifluoroborate (LiODFB) and propylene carbonate (PC). An optimized plastic crystal composite ([DTMA][TFSI]:LiODFB:PC=8:1:1 in molar ratio) as a solid-state electrolyte exhibited a decent cycling stability in LiFePO₄/Li half-cell, with a specific discharge capacity of 144 mA·h/g and capacity retention of 94% after 50 cycles at C/20.     

Associations Between Low-Income Children's Fine Motor Skills in Preschool and Academic Performance in Second Grade

Research Findings: Given the growing literature pertaining to the importance of fine motor skills for later academic achievement (D. W. Grissmer, K. J. Grimm, S. M. Aiyer, W. M. Murrah, &; J. S. Steele, 2010 Grissmer , D. W. , Grimm , K. J. , Aiyer , S. M. , Murrah , W. M. , &; Steele , J. S. ( 2010 ). Fine motor skills and early comprehension of the world: Two new school readiness indicators . Developmental Psychology , 46 , 1008 – 1017 .[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]), the current study examines whether the fine motor skills of economically disadvantaged preschool students predict later academic performance in 2nd grade. More specifically, we expand on the current literature and evaluate whether 2 types of fine motor skills—fine motor object manipulation and fine motor writing—predict academic achievement above and beyond the effects of demographic characteristics and early language and cognition skills. Results indicate that performance on both fine motor writing and object manipulation tasks had significant effects on 2nd-grade reading and math achievement, as measured by grades and standardized test scores. Stronger effects were yielded for writing tasks compared to object manipulation tasks. Practice or Policy: Implications for researchers and early childhood practitioners are discussed.     

Mouse (Mus) burrows: Effects of age,strain, and domestication

Burrows dug by house mice in laboratory burrow boxes were examined in two inbred strains (C57BL/6J and BALB/cJ) across five age groups and compared with burrows of wild trapped mice. Burrows of feral domestic mice were examined in an outdoor enclosure as well as in the laboratory. Results demonstrated that burrows differ between strains; highly active C57 mice tended to burrow more than did Balbs at all age ranges. Moreover, burrows became more complex with age in both strains. Differences among domestic, feral, and wild mice were minimal. Results are discussed in terms of possible genetic differences in activity and as evidence against the notions of degeneracy accompanying domestication.     

Women's path into science and engineering majors: a structural equation model

The intent of this study was to investigate the adequacy of Weidman's (1985 Weidman, J. C. 1985. “Undergraduate socialization: A conceptual approach”. In Higher education: Handbook of theory and research, Edited by: Smart, J. C. Vol. V, 298–322. New York: Agathon Press.  [Google Scholar], 1989 Weidman, J. C. 1989. “The world of higher education: A socialization-theoretical perspective”. In The social world of adolescents: International perspectives, Edited by: Hurrelmann, K. and Engel, U. 87–105. New York: W. de Gruyter.  [Google Scholar]) theoretical undergraduate socialization model as an empirical-based causal model pertaining to women's career path choice into a science or engineering (SE) major via structural equation modeling. Data were obtained from the Beginning Postsecondary Students Longitudinal Study (1996–2001) from the U.S. Department of Education. Results indicate that Weidman's model was somewhat supported. Results from the evaluation of the causal model suggest that women's path into an SE major was influenced by both collegiate and non-collegiate factors, with 1st-year college grades and high school math grades being the dominant indirect influences.     

Trying to Make a Lever Work at Ages 1 to 4: The Development of "Functions" (Logico-mathematical Thinking)

To find out if children could make functions before age 4, 73 children aged 1 to 4 were encouraged to imitate the use of a lever to make a beanbag fly up. Functions are mental relationships that preoperational children can make between 2 things at a time in a unidirectional way (Piaget, Grize, Szeminska, &; Bang, 1968 Piaget, J., Grize, J.-B., Szeminska, A. and Bang, V. B. 1977. Epistemology and psychology of functions, Boston: Dreidel. (Original work published 1968)[Crossref] , [Google Scholar]/1977). The child's construction of the following 3 functions was hypothesized and confirmed: (a) As a function of being pushed down, the up end of the board (the lever) goes down; (b) as a function of this descent, the down end of the board goes up; and (c) as a function of this ascent of the board, the beanbag flies up. Three developmental levels were found, and educational implications are discussed.     

A recessive gene controlling male sterility sensitive to short daylength/low temperature in wheat (Triticum aestivum L.)

Utilization of a two-line breeding system via photoperiod-thermo sensitive male sterility has a great potential for hybrid production in wheat (Triticum aestivum L.). 337S is a novel wheat male sterile line sensitive to both short daylength/low temperature and long daylength/high temperature. Five F₂ populations derived from the crosses between 337S and five common wheat varieties were developed for genetic analysis. All F₁’s were highly fertile while segregation occurred in the F₂ populations with a ratio of 3 fertile:1 sterile under short daylength/low temperature. It is shown that male sterility in 337S was controlled by a single recessive gene, temporarily designated as wptms3. Bulked segregant analysis (BSA) coupled with simple sequence repeat (SSR) markers was applied to map the sterile gene using one mapping population. The wptms3 gene was mapped to chromosome arm 1BS and flanked by Xgwm413 and Xgwm182 at a genetic distance of 3.2 and 23.5 cM, respectively. The accuracy and efficiency of marker-assisted selection were evaluated and proved essential for identifying homozygous recessive male sterile genotypes of the wptms3 gene in F₂ generation.     

Analysis of problem solving strategies on the Kohs block design test

The present study investigated the strategies involved in the Kohs Block Design task from a cognitive point of view. One purpose was to improve the classical distinction between syncretic and analytic strategies. An other goal was to determine whether subjects show the same strategies according to their field dependence level. Finally, we analysed the way the subjects described their own strategies in order to assess their metacognitive skills. The subjects (17 year-old pupils) were first given a field dependence proof (G.E.F.T.), then the Kohs Block Design task and finally were interviewed about their strategies. Each pupil was tested individually and videotaped. The strategies were drawn by four indicators. The results indicated three strategies: syncretic, analytic and synthetic strategies. The degree of field dependence clearly distinguished the strategies in the Block Design task: more independent the subject is, more he used a synthetic strategy. Finally, the subjects’ verbalizations were more closely connected with their behaviours. In a general way, the subjects appeared to be steady in the use of a particular strategy.     

Homework Stress: Construct Validation of a Measure

This article presents 2 studies aimed at validating a measure of stress experienced by children and parents around the issue of homework, applying Benson's program of validation (Benson, 1998 Benson, J. 1998. Developing a strong program of construct validation: A test anxiety example. Educational Measurement: Issues and Practice, 17: 10–17. doi: 10.1111/j.1745–3992.1998.tb00616.x[Crossref] , [Google Scholar]). Study 1 provides external validity of the measure by supporting hypothesized relations between stress around homework and students’ and parents’ positive and negative affect, students’ sense of competence, and students’ type of motivation. In Study 2, the measure was administered to students with and without learning disability—2 groups assumed to differ in the level of stress experienced while doing homework. Results of both studies support the validity of the measure.     

Analysing novices analysing Prolog: what stories do novices tell themselves about Prolog?

Informal observations of Prolog learners showed that, despite being presented with correct information and models, students still tended to construct their own idiosyncratic explanations of events, and, characteristically, they defended these ‘stories’ fiercely when tutorial intervention was attempted. Although the stories were often so flawed that the student's future progress was potentially hampered, it was nevertheless true that learning could not have proceeded at all without them. It seems that if we are to understand the novice Prolog programmer, we need to know about these stories, their source, and what, if anything, they have in common from one learner to another. Pain and Bundy (1987) posed the question “What stories should we tell novice Prolog programmers?” in order to teach them Prolog. In our research, we ask: “What stories do novices Prolog programmers tell themselves?” in order to learn Prolog. Observational studies undertaken showed that students used tacit knowledge of human discourse processes both to interpret the language used to communicate with the computer and to interpret the behaviour of the machine. Students did not appreciate the fundamental differences between natural discourse (as takes place amongst humans) and formal discourse (as takes place between humans and machines), and confused elements of the discourse levels. This can be an effective initial learning strategy, but unless its limitations are recognised, programs are inevitably incomplete at some level. Examples from these studies are reported here with illustrative protocol fragments.     

Central Intervention in Local Educational Disputes 1902‐1944

This authority . . . claims to be supreme in the borough . . . this authority . . . claims to be arbiters of their own destiny. We intend to be masters in our own house untrammelled and will submit to no dictation from any source whatever . . . there is nothing in the Education Act that warrants the board of education in interfering with the local authority in its discretion as to whom it would appoint and discharge. ^{1 1}Lowestoft Journal, Report on the meeting of the borough council 16 June, 1923. View all notes

     

The Medical School Learning Environment Survey: an examination of its factor structure and relationship to student performance and satisfaction

The Medical School Learning Environment Survey (MSLES) was used with a sample of 311 undergraduate medical students in British Columbia, Canada, to assess the seven scales of Medical Breadth of Interest, Personal Breadth of Interest, Emotional Climate, Flexibility, Meaningful Learning Experience, Organization, Nurturance and Student–Student Interaction. Confirmatory factor analysis was used to support the validity of the MSLES when used with this sample.     

Analysis of Parent,Teacher, and Consultant Speech Exchanges and Educational Outcomes of Students With Autism During COMPASS Consultation

The significant increase in the numbers of students with autism combined with the need for better trained teachers (National Research Council, 2001) call for research on the effectiveness of alternative methods, such as consultation, that have the potential to improve service delivery. Data from 2 randomized controlled single-blind trials indicate that an autism-specific consultation planning framework known as the collaborative model for promoting competence and success (COMPASS) is effective in increasing child Individual Education Programs (IEP) outcomes (Ruble, Dalrymple, & McGrew, 2010 Ruble, L. A., Dalrymple, N. J. and McGrew, J. H. 2010. The effects of consultation on Individualized Education Program outcomes for young children with autism: The collaborative model for promoting competence and success. Journal of Early Intervention, 32: 286–301. doi:10.1177/1053815110382973[Crossref], [PubMed] , [Google Scholar]; Ruble, McGrew, & Toland, 2011 Ruble, L., McGrew, J. and Toland, M. Randomized controlled study of teacher training in autism. Poster session presented at the meeting of the American Psychological Association. Washington, DC. August.  [Google Scholar]). In this study, we describe the verbal interactions, defined as speech acts and speech act exchanges that take place during COMPASS consultation, and examine the associations between speech exchanges and child outcomes. We applied the Psychosocial Processes Coding Scheme (Leaper, 1991 Leaper, C. 1991. Influence and involvement in children's discourse: Age, gender, and partner effects. Child Development, 62: 797–811. doi:10.1111/j.1467-8624.1991.tb01570.x[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]) to code speech acts. Speech act exchanges were overwhelmingly affiliative, failed to show statistically significant relationships with child IEP outcomes and teacher adherence, but did correlate positively with IEP quality.