NOVA SKED: A behavioral notation language for Data General minicomputers

A state notation language (NOVA SKED) for the experimental control and collection of data from operant behavior experiments by Data General NOVA series minicomputers is described. NOVA SKED is based on the SKED system written for the Digital Equipment Corporation PDP8 series of minicomputers. The NOVA SKED state notation syntax enables diagramming experimental procedures directly and precisely by the operant experimenter, who need not be familiar with computers. This syntax can then be compiled by the computer into programs that operate under the SKED run-time system (RTS). The SKED RTS operates in a timesharing mode that allows up to 16 experimental stations to function simultaneously and independently from each other. NOVA SKED is a “stand-alone” system that collects and stores data on digital magnetic tape.     

Inside the Thompson laboratory during the "cerebellar years" and the continuing cerebellar story

This paper is based on the talk by one of the authors (DL) given at the symposium for the retirement of RF Thompson (RF Thompson: A bridge between 20th and 21st century neuroscience). We first make some informal observations of the historical times and research conditions in the Thompson laboratory when the cerebellum was found to play a critical role in eye lid classical conditioning, the "cerebellar years". These conditions influenced our collaborative international program on the phenomenon known as "transfer of training" or "savings". Our research shows that the appearance of "savings" is an artifact of the order of testing, and depends upon the functioning of the contralateral interpositus nucleus (IPN) in a way that is complementary to the role of the IPN in normal eyelid classical conditioning.     

A microcomputer-controlled laboratory: Hardware

A microcomputer-controlled laboratory designed to incorporate the Motorola 6800 microprocessor unit is described. The microcomputer system is reliable, flexible, and expandable, as well as adaptable to the next generation of Motorola microprocessor components. A modular system design utilizes multiprocessing with separate microprocessor units dedicated to specific functions. This computer, when used with powerful, high-level software, provides a general-purpose psychology laboratory computer system that is easy to use.     

A microcomputer-controlled laboratory: Software

The software used in a microcomputer-controlled laboratory is described. Primary emphasis is placed upon describing the capabilities of a powerful, easy-to-use programming language appropriate for controlling research in a wide variety of applications. It is particularly appropriate for physiological and operant laboratories. Design of the language and accompanying operating system follow a rigorous modular, structured approach, with most coding done in high-level languages. As a result, the code is easy to maintain and expand. In addition, it is not difficult to adapt the programs to other microprocessors to take advantage of a rapidly improving technology.     

Rule-based extrapolation: A continuing challenge for exemplar models

Erickson and Kruschke (1998, 2002) demonstrated that in rule-plus-exception categorization, people generalize category knowledge by extrapolating in a rule-like fashion, even when they are presented with a novel stimulus that is most similar to a known exception. Although exemplar models have been found to be deficient in explaining rule-based extrapolation, Rodrigues and Murre (2007) offered a variation of an exemplar model that was better able to account for such performance. Here, we present the results of a new rule-plus-exception experiment that yields rule-like extrapolation similar to that of previous experiments, and yet the data are not accounted for by Rodrigues and Murre's augmented exemplar model. Further, a hybrid rule-and-exemplar model is shown to better describe the data. Thus, we maintain that rule-plus-exception categorization continues to be a challenge for exemplar-only models.     

Advances in stereotype threat research on African Americans: continuing challenges to the validity of its role in the achievement gap

Over the past two decades, there have been significant advances in stereotype threat research on African Americans. The current article reviews general issues of internal validity and external validity (or generalizability) beyond college laboratories in stereotype threat studies, and as they are revealed specifically in the context of advances in research on African Americans. Research suggests an internally valid operational definition of stereotype threat relevant to the African American students’ experience is the expectation of, and reactions to, interviewer or teacher bias. The external validity of laboratory research on stereotype threat is very limited. Effect sizes and variance explained in multivariate models in most survey and field studies of stereotype threat variables are very small. Advances in stereotype threat research emphasize the relatively greater importance of school racial climate and faculty diversity in efforts to reduce the achievement gap. Interventions to improve the educational experiences of African American students should address situational factors of school racial climate, faculty diversity, and cultural competence training for non-African American instructors and interviewers.     

A microcomputer-based laboratory: Real-world experience

This paper discusses current hardware and software in use at the Center for Automated Systems in Education, a project of the department of psychology at Southwest Texas State University. The hardware ranges from inexpensive microcomputers to sophisticated color graphic display systems. The advantages and disadvantages of various systems are considered. Current projects of interest to educators and psychologists are mentioned.     

Traditional gender role beliefs and individual outcomes: An exploratory analysis

The results of a survey administered to 806 undergraduate students serve as the basis for analyzing the relationships among traditional gender roles, same-sex intimacy, and homophobia. High levels of homophobia and low levels of intimacy were found among those who believe strongly in the traditional roles. Previous research has shown both homophobia and a lack of intimacy to be harmful to individuals and for society. The present findings may, therefore, constitute empirical evidence of the negative effects of gender roles. Sex differences found in the survey results also support this contention. A general model of the consequences of traditional gender role beliefs for those who hold these views is also speculated.     

真理：重温一场传统的论战

按照对"真"的结构分析,真理论可分为:内在论、符合论、融贯论和紧缩论。这四种方案各有其适用范围,但经过深入研究发现,除符合论以外的三种方案都存在棘手的难题。融贯论不能证成逻辑上的不矛盾律,不能合理地解决如何选择"支配性"信念系统的问题,并且它和内在论都不能解决偶然真问题。紧缩论的问题则是:若将"真"理解为提供一种认知担保,与其所主张的等值图式相结合,就可推出:信念p没有认知担保当且仅当非p有认知担保,这与实际情形不相符——关于p和非p,我们有可能都没有认知担保。为摆脱传统符合论的困境,可以通过列举"老生常谈"的方式,发展一种多元真理论:"真"在不同领域取决于不同的事物——在一个区域内取决于符合,在另一个领域内取决于融贯。"超可断定性"这一概念可以解释这种多元真理论的可行性。