Memories of reward events and expectancies of reward events may work in tandem     

E. J. Capaldi  Kimberly M. Birmingham  Suzan Alptekin 《Learning & behavior》1995,23(1):40-48

A common assumption is that expectancies of reward events in instrumental tasks are established on the basis of Pavlovian conditioning. According to the tandem hypothesis, tested in the four runway investigations reported here employing rats, memories of reward events may serve as the conditioned stimuli eliciting expectancies. In Experiments 1–3, rats were trained under a schedule of partial reward (P), which did not produce increased resistance to extinction, and subsequently shifted to consistent reward (C). According to the tandem hypothesis, the shift to the C schedule should result in increased resistance to extinction if, as hypothesized, under the P schedule the memory of reward, S^R, came to elicit the expectancy of nonreward,_EN. This hypothesis was confirmed under a variety of conditions. It was shown that increased resistance to extinction could not be attributed to the P schedule alone, to the rats receiving two schedules, P and C, to stimuli other than S^R eliciting E_N, or to the rats forgetting reward-produced memories when expecting nonreward (Experiment 4). It was shown that the tandem hypothesis could explain the divergent findings obtained in prior studies employing a shift from P to C as well as in the present study.  相似文献   

Conditioning with taste as the CS in conditioned flavor preference learning     

Elizabeth D. Capaldi  Martin J. Hunter  Sandra A. Lyn 《Learning & behavior》1997,25(4):427-436

There appear to be unconditioned affective reactions to the four basic tastes: liking for sweet and salt and disliking for sour and bitter. We attempted to modify these reactions by pairing the tastes with calories and with sweeter tastes. Differing sucrose concentrations were ineffective in reversing the preference for salt over citric acid or for saccharin over quinine. We could, however, reverse the preference for salt over citric acid, producing an actual preference for sour over salt, by using sucrose and saccharin as the reinforcers. The initial reactions to tastes could also be modified by reducing the initial difference in affect produced by the tastes through mixing both tastes with sucrose.  相似文献   

The Asian American market for publishers in the United States     

Mindy?OkuraEmail author  Jill?SuEmail author 《Publishing Research Quarterly》2003,19(3):60-68

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Two Visions of America     

Nicholas Capaldi 《Academic Questions》2012,25(3):334-336

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Parental Attitudes Regarding School-Based Sexuality Education in Utah     

Mindy Steadman  Benjamin Crookston  Randy Page 《American journal of sexuality education》2014,9(3):347-369

Sexuality education programs can be broadly categorized as either risk-avoidance or risk-reduction approaches. Health educators in Utah public schools must teach a state mandated risk-avoidance curriculum which prohibits the advocacy or encouragement of contraception. Multiple national surveys indicate that parents prefer a risk-reduction approach to sexuality education that promotes abstinence and the use of condoms or contraception for prevention of unwanted pregnancy and sexually transmitted infection. To date, no survey of Utah parents has been conducted.

This study utilized an Internet survey to gather data from 344 Utah parents to analyze their preferences regarding school-based sexuality education, sexuality topics, and support for objectives from the National Sexuality Education Standards. The vast majority of Utah parents surveyed support a risk-reduction approach to sexuality education, a wide variety of sexuality topics, and the majority of National Sexuality Education Standards. Statistically significant differences were identified by parents’ education, income, attendance at religious services, and political affiliation. Results support that Utah laws and education policies should be reexamined to provide for instruction that aligns with professional recommendations, best-practice recommendations based on peer-reviewed research, parental attitudes, and the needs of Utah teens.  相似文献   

The basic tastants in aversion conditioning: Evidence for sensory preconditioning and not potentiation     

Privitera GJ  Capaldi ED 《Learning & behavior》2006,34(4):355-360

In Experiment 1, a potentiation paradigm was used to test the relative influence of odor and taste with two 2 basic tastants (i.e., salt and sweet) in conditioned aversion learning. Experiment 1 showed that aversions to tastants (salt or sweet presented in a manner by which it could be tasted) were established only in subjects trained with the tastant, not the odor (i.e., salt or sweet presented in a manner by which it could not be tasted). Experiment 2 demonstrated, with a sensory preconditioning procedure, that the expression of an aversion to tastants was dependent on previous tastant experience prior to odor aversion training. These results suggest that while subjects can smell salt and sweet solutions, these odors are neither sufficient nor necessary for the expression of a conditioned tastant aversion.  相似文献   

Intervening or Ignoring: Learning about teaching in new times     

Mindy Blaise  Jennifer Elsden‐Clifton 《Asia-Pacific Journal of Teacher Education》2007,35(4):387-407

In response to the rise of collaborative learning within education, two teacher educators redesigned their courses to explore the complexities of pedagogy within a New Learning framework. Multi‐age grouping provided opportunities for pre‐service teachers to work with others from different year levels on an interdisciplinary assessment task. As a result of this approach to teaching and learning, pre‐service teachers were challenged and resistance arose. These acts of student resistance provided opportunities for examining the dynamics and complexity of collaborative learning and the implications this has for teachers in new times. In particular, it explores the tension around intervening and ignoring students' resistances created by engaging in new learning pedagogy.  相似文献   

Intergenerational transmission of abuse: a two-generational prospective study of an at-risk sample.     

K C Pears  D M Capaldi 《Child abuse & neglect》2001,25(11):1439-1461

OBJECTIVE: A model was examined in which the association between a parent's history of abuse and the parent's own abusive behavior toward his or her children was hypothesized to be mediated by parental psychopathology, early childbearing, and consistency of discipline. Additionally, the effect of severity of abuse on the likelihood of becoming abusive was examined. METHOD: Participants were 109 parents (G1) and their male children (G2) who were involved in a longitudinal study. The G1 parents reported on their own experiences of abuse when they were children. Ten years later, the G2 youths reported on the G1 parents' abusive behavior toward them. A number of other factors, including parental socioeconomic status (SES), antisocial behavior, depression and Post-traumatic Stress Disorder (PTSD), consistency of discipline, and the perceived early difficulty of the G2 children were measured. RESULTS: As reported by their own children, parents who reported having been abused in childhood were significantly more likely to engage in abusive behaviors toward the next generation. Findings indicated that abuse experienced by the parents, as well as consistency of discipline and depression plus PTSD, were predictive of parental abuse of the child. Contrary to hypotheses, the effects were not fully mediated. However, there were significant interactions between parental history of abuse and consistency of discipline, as well as abuse history and depression and PTSD. Parents who had experienced multiple acts of abuse and at least one physical impact were more likely to become abusive than were the other parents. CONCLUSIONS: The implications of these findings for preventive interventions are discussed.  相似文献   

In‐service Education and the Superintendency: Lloyd Wolfe in San Antonio,Texas, 1902–1908     

Mindy Spearman 《Journal of educational administration and history》2006,38(1):59-72

During the early 20th century, practicing San Antonio teachers took part in several different types of in‐service education. This paper investigates the types of in‐service education present during the superintendency of Lloyd Wolfe (1902–1908), a progressive San Antonio educator who employed innovative approaches to in‐service education. Influenced by Francis W. Parker, Wolfe placed emphasis on methodology that stressed child‐centred activities and real‐world problem solving. The paper explores how Wolfe disseminated his ideology to his teachers through the lectures and content of a summer in‐service programme. It contemplates criticism from conservative San Antonio politicians who considered some of the approaches to in‐service education both too progressive and too costly. It demonstrates how personal ideology of particular superintendents shaped and changed teacher education programmes. Finally, the author places the San Antonio programme in a broader context that contributes to what is known about early teacher education programmes in the USA.  相似文献   

Conditioned flavor preferences as a function of deprivation level: Preferences or aversions?     

David H. Campbell  Elizabeth Deutsch Capaldi  David E. Myers 《Learning & behavior》1987,15(2):193-200

Rats tend to prefer flavors previously consumed under low deprivation to flavors previously consumed under high deprivation (Capaldi & Myers, 1982). We attempted to distinguish among possible associative explanations by determining whether this conditioning phenomenon was based upon conditioned preferences, conditioned aversions, or both. We compared preference for flavors presented exclusively under either high or low deprivation with preference for a neutral flavor. In Experiments 1A and 1B the neutral flavor was one that had been randomly paired with both high and low deprivation, whereas in Experiments 2 and 3 the neutral flavors had not been associated with either high or low deprivation. Our results strongly suggest that this conditioning phenomenon is based upon an actual increase in preference for the flavor consumed under low deprivation rather than on any form of aversion conditioning.  相似文献