Context sensitivity of conditioned suppression following preexposure to the conditioned stimulus

Conditioned suppression in rats is often unaffected when the context (or set of background stimuli) is changed following conditioning. This suggests that responding to the conditioned stimulus (CS) can be relatively insensitive to the context in which the CS is presented. In two experiments, we examined whether sensitivity to contextual stimuli is affected by preexposure to the CS. In Experiment 1, when the CS was novel at the outset of conditioning, conditioned suppression was not affected when the context was changed following conditioning. However, when the CS had been preexposed, responding was weaker when extinction occurred outside of the conditioning context. In Experiment 2, responding was again sensitive to the test context, regardless of whether preexposure occurred in the conditioning context or in an alternate context. These results suggest that the extent to which responding is sensitive to context can depend on the conditioning history of the CS.     

In Their Own Words: Teachers' Reflections on Adaptability

Current research explores adaptability by gathering teachers' reflections on their adaptations. However, the field knows little of what the term adaptability means to teachers who currently teach in today's educational context. In this article, adaptability is discussed from the perspectives of 3 practicing classroom educators, teaching in various contexts (geographic region and grade level). Teachers' voices of adaptability are examined and a definition of adaptability is discussed. Obstacles are presented in these teachers' efforts to adapt their instruction in their respective contexts. Teachers then discussed the ways in which they navigated these obstacles to modify their instruction to fit a variety of learners and experiences despite these constraints.     

Temporal patterns of schedule-induced drinking and pawgrooming in rats exposed to periodic food

Five rats were exposed to fixed-time food schedules, ranging from 30 to 480 sec. Three rats displayed a postfood pattern of schedule-induced drinking, with short latencies from food delivery to drinking at all interfood interval durations. In contrast, drinking for the other 2 subjects tended to occur at lower overall levels, and drinking bouts frequently began in the middle of the interfood interval, such that the latency from food delivery to drinking increased dramatically as the interfood interval increased. Observation of these 2 subjects revealed that another form of licking-pawgrooming-occurred reliably after food delivery and before drinking bouts. A between subject comparison of the 3 postfood drinkers and the 2 pawgroomers revealed that, in addition to a common topography (repetitive licking), pawgrooming and drinking were similar with respect to their temporal locus, relation to the interfood interval, and extinction baseline levels. These similarities suggest that drinking and pawgrooming are induced by a common mechanism. Cohen, Looney, Campagnoni, and Lawler’s (1985) two-state model of reinforcer-induced motivation provides a useful framework for the interpretation of these results.     

Teaching Quality Across School Settings

Districts are increasingly making personnel decisions based on teachers’ impact on student-achievement gains and classroom observations. In some schools, however, a teacher’s practices and their students’ achievement may reflect not just individual but collaborative efforts. In other settings, teachers’ instruction benefits less from the insights and support of their colleagues. This article analyzes multiple measures of teacher and teaching quality for 24 language arts teachers in New York City who teach in different types of school environments. Teachers in different value-added quartiles were observed and scored using two protocols, PLATO and CLASS. Schools were categorized as more and less functional using Department of Education environment grades. To compare the practices of higher and lower value-added teachers in more and less functional schools, we conduct MANOVAs of observation scores and use qualitative coding of field notes. We find value-added measures and observation protocols provide confirmatory information in less functional schools but provide contradictory information about teacher quality in more functional schools. Implications for teacher education, policy, and future research are discussed.     

Feminine sexual desire and shame in the classroom: an educator’s constructions of and investments in sexuality education

ABSTRACT

Within the growing body of literature on sexuality education in South Africa, researchers have highlighted how teachers may face, or themselves be, barriers to the implementation of rights-based comprehensive sexuality education. Important issues with regard to educators are: firstly, the social and discursive space within which educators are located; and secondly, the complex emotional and psychic investments that educators take up within particular discourses and practices. This paper explores, through a psychosocial reading of an interview extract with a particular educator based in the Eastern Cape of South Africa, how discursive and psychic concerns are sutured within the complex subjectivity of the educator as the medium for sexual education in schools. Specifically, it highlights the numerous ways in which feminine sexuality and desire may be avoided, denied and silenced. Even when feminine desire is specifically evoked as in this case, it is done so in a way that ensures social and cultural respectability, thereby reproducing shame narratives that form and maintain traditional gender discourses. Our analysis demonstrates how engaging with educators as subjects with their own sexual history and psychic dynamics, and as individuals with raced, gendered and classed identities, is a potentially transformative perspective for effective sexuality education.     

Educating students with mild disabilities in general education classrooms: Minnesota alternatives

This article reports two major data collection efforts conducted during successive years. Study 1 examined the relationship between the school effectiveness variables identified in the Minnesota Educational Effectiveness Project (MEEP), and the attitudes and achievement of students in 31 MEEP schools. Study 2, which focused on 11 of the Study 1 schools, compared the instructional programs provided to students with mild disabilities in three integrated programs in these 11 schools, with those provided by conventional resource "pull-out" programs in three other schools. We not only contrasted program characteristics, but analyzed differences between program characteristics and cognitive and affective outcomes. Results do not provide a strong basis for concluding that general efforts at school improvement will provide the framework for improved outcomes among low-achieving students.     

Organization of attack and other behaviors of White King pigeons exposed to intermittent water presentations

Six water-deprived pigeons were exposed to a fixed-time 90-sec water schedule with and without a conspecific target available. Target contacts and the pigeon’s location in the test chamber during the interreinforcement interval were recorded, and the results were compared with those previously obtained with food reinforcement. Prior to target introduction, water-reinforced birds spent more total time in the front near the reinforcer dispenser and less in the rear than food-reinforced birds and, unlike food-reinforced birds, exhibited postreinforcement drinking-like behaviors near the reinforcer dispenser before moving away from that area. With the target available, the level, topography, and duration of target-directed biting pecks were comparable for food- and water-reinforced pigeons. In contrast, the temporal organization of target pecks reflected the different temporal and spatial organizations of behavior prior to target introduction. For both food- and water-reinforced birds, the time between reinforcers at which a bird was spatially situated halfway between the front and rear of the chamber prior to target presentation was positively correlated with the time at which maximum target contact subsequently occurred.