Programming in natural language: A descriptive analysis

This study investigated the utility of natural language in specifying procedures. Performance of programmers was compared with that of nonprogrammers on two types of problems: a “real-world” ordering task and a computer like database search task. Programmers performed better than nonprogrammers in general, although overall differences between the groups were greater for the real-world problem domain. Analyses of protocols suggest that an unconstrained natural language programming environment is presently infeasible. Although constraints imposed in the problem specification do appear to improve performance, they alone are not sufficient to produce efficient natural language programming. It is argued that programming requires general problem solving strategies and that at least some aspects of such strategies may be dependent upon the specific language in which they are implemented.     

Insightful problem solving and emulation in brown capuchin monkeys

We investigated problem solving abilities of capuchin monkeys via the “floating object problem,” a task in which the subject must use creative problem solving to retrieve a favored food item from the bottom of a clear tube. Some great apes have solved this problem by adding water to raise the object to a level at which it can be easily grabbed. We presented seven capuchins with the task over eight trials (four “dry” and four “wet”). None of the subjects solved the task, indicating that no capuchin demonstrated insightful problem solving under these experimental conditions. We then investigated whether capuchins would emulate a solution to the task. Seven subjects observed a human model solve the problem by pouring water from a cup into the tube, which brought the object to the top of the tube, allowing the subject to retrieve it. Subjects were then allowed to interact freely with an unfilled tube containing the object in the presence of water and objects that could be used to solve the task. While most subjects were unable to solve the task after viewing a demonstrator solve it, one subject did so, but in a unique way. Our results are consistent with some previous results in great ape species and indicate that capuchins do not spontaneously solve the floating object problem via insight.     

Decomposing intuitive components in a conceptual problem solving task

Research into intuitive problem solving has shown that objective closeness of participants' hypotheses were closer to the accurate solution than their subjective ratings of closeness. After separating conceptually intuitive problem solving from the solutions of rational incremental tasks and of sudden insight tasks, we replicated this finding by using more precise measures in a conceptual problem-solving task. In a second study, we distinguished performance level, processing style, implicit knowledge and subjective feeling of closeness to the solution within the problem-solving task and examined the relationships of these different components with measures of intelligence and personality. Verbal intelligence correlated with performance level in problem solving, but not with processing style and implicit knowledge. Faith in intuition, openness to experience, and conscientiousness correlated with processing style, but not with implicit knowledge. These findings suggest that one needs to decompose processing style and intuitive components in problem solving to make predictions on effects of intelligence and personality measures.     

Wide and narrow scope

In this paper I present an original and relatively conciliatory solution to one of the central contemporary debates in the theory of rationality, the debate about the proper formulation of rational requirements. I begin by offering my own version of the “symmetry problem” for wide scope rational requirements, and I show how this problem necessitates the introduction of a normative concept other than the traditional notions of reason and requirement. I then sketch a theory of rational commitment, showing how this notion solves the symmetry problem as I’ve presented it. I also show that the concept of rational commitment is one we already appeal to in common sense discourse, and that it is necessary for vindicating comparative judgments of rationality.     

Schema Creation in Programming

The creation of plan schemes is examined in a naturalistic, longitudinal study of problem solving. Ten novice programmers each wrote eight Pascal programs to solve a series of problems. Their protocols were analyzed to determine how declarative programming knowledge was used to create simple procedural program plans, and how the simple plans were used to create complex plans. Plan creation showed a process of backward development, from the goal to the plan focus, that port of the plan that directly implements the goal. Once defined; it is expanded to create the complete plan, showing backward development of plan parts from the focus. Once the plan is complete, it may be stored as a plan schema and retrieved in subsequent problem solving. The plan will then show forward development as it is implemented in schema order, the order in which plan pieces occur in the finished program. The change from backward development during creation to forward development after retrieval was strongly evident in the statistical analysis of the protocol data. Previous studies of novice programming, which showed only forward development, ore explained as special cases of this more general model, cases in which schema knowledge was available to the problem solver.     

Enhancing Digital Fluency through a Training Program for Creative Problem Solving Using Computer Programming

The purpose of this paper is to propose a training program for creative problem solving based on computer programming. The proposed program will encourage students to solve real‐life problems through a creative thinking spiral related to cognitive skills with computer programming. With the goal of enhancing digital fluency through this proposed training program, we investigated its effects. Two sets of experiments were performed in which 119 typical students and 30 younger, gifted students participated. Two synthetic creative problem solving tests, which had a high correlation with logical ability, scientific problem solving ability and divergent thinking ability, were developed to measure creative problem solving ability. We provided the treatment group with a paper‐based booklet with relevant problems developed specifically for that group. ANCOVA statistical procedures were used to analyze the pre‐ and post‐synthetic creative problem solving tests. The findings of our study are as follows: with typical students, the originality of the treatment group outperformed the control group, a result that was compatible with previous research. With gifted students, the fluency of the treatment group outperformed the control group, and overall creative problem solving ability was enhanced. Remarkably, fluency increased significantly, a notable difference from the results of prior studies. In conclusion, we inferred that, given the definition of digital fluency, if creative problem solving ability is enhanced by a training program for creative problem solving based on computer programming, digital fluency will ultimately be improved. In this paper, we discuss the result of fluency enhancement that contradicts prior research. We suggest that this training program could be a new learning environment for the students who have grown up with digital media.     

The Advanced Programmer's Reliance on Program Semantics: Evidence from some Cognitive Tasks

This study examined the effects of programming expertise on the semantic processing of computer programs. Experiment 1 showed that sensitivity to semantic changes (i.e. changes of actual program functions) in a BASIC program recognition task increased with programming experience. No such pattern was observed for surface changes (i.e. changes of program syntax without functional alterations). The magnitude of semantic priming for BASIC keywords in a lexical decision task also increased with expertise, but the pattern was not found with normal English priming. In Experiment 2, novice BASIC programmers detected more semantic changes than the controls (non-programmers) in BASIC programs; the reverse was found for surface changes. Both the controls and the novices detected more semantic than surface changes in English passages. The BASIC priming effect was found only with the novices whereas English priming was demonstrated with both the control and the novice participants. The present findings support the view that the programming expert relies particularly on semantic processing and such reliance is specific to programming activities. Practical implications of the present results are discussed.     

认知抑制——问题解决研究的新视角

抑制是一种领域一般(domain-general)的认知过程,它使儿童和成人能够抗拒习惯、自动化、诱惑、分心物或干扰从而适应存在冲突的情境(Diamond,2013)。抑制控制模型认为儿童或成人在问题解决中的失败并非是缺少相关知识与概念,而是抑制控制失败造成的。研究者采用负启动研究范式和脑成像技术在类皮杰任务、数学和科学问题解决中证实了认知抑制的作用。未来研究应把认知抑制与元认知的研究结合起来,探究认知抑制的发展轨迹及二者在问题解决中的相对重要性。同时,针对认知抑制训练的干预研究也值得重视。     

Conceptual Knowledge,Procedural Knowledge,and Metacognition in Routine and Nonroutine Problem Solving

When, how, and why students use conceptual knowledge during math problem solving is not well understood. We propose that when solving routine problems, students are more likely to recruit conceptual knowledge if their procedural knowledge is weak than if it is strong, and that in this context, metacognitive processes, specifically feelings of doubt, mediate interactions between procedural and conceptual knowledge. To test these hypotheses, in two studies (Ns = 64 and 138), university students solved fraction and decimal arithmetic problems while thinking aloud; verbal protocols and written work were coded for overt uses of conceptual knowledge and displays of doubt. Consistent with the hypotheses, use of conceptual knowledge during calculation was not significantly positively associated with accuracy, but was positively associated with displays of doubt, which were negatively associated with accuracy. In Study 1, participants also explained solutions to rational arithmetic problems; using conceptual knowledge in this context was positively correlated with calculation accuracy, but only among participants who did not use conceptual knowledge during calculation, suggesting that the correlation did not reflect “online” effects of using conceptual knowledge. In Study 2, participants also completed a nonroutine problem-solving task; displays of doubt on this task were positively associated with accuracy, suggesting that metacognitive processes play different roles when solving routine and nonroutine problems. We discuss implications of the results regarding interactions between procedural knowledge, conceptual knowledge, and metacognitive processes in math problem solving.     

A Defense of the Objective/Subjective Moral Ought Distinction

In this paper, I motivate and defend the distinction between an objective and a subjective moral sense of “ought.” I begin by looking at the standard way the distinction is motivated, namely by appealing to relatively simple cases where an agent does something she thinks is best, but her action has a tragic outcome. I argue that these cases fail to do the job—the intuitions they elicit can be explained without having to distinguish between different senses of “ought.” However, these cases are on the right track—I argue that more sophisticated versions of the cases provide strong motivation for the distinction. I then discuss two important problems for the distinction: the “which ‘ought’ is more important?” problem, and the “annoying profusion of ‘oughts’” problem. I argue that each of these problems can be solved in several different ways.     

A Meta-analytic Review of Components Associated with Parent Training Program Effectiveness

This component analysis used meta-analytic techniques to synthesize the results of 77 published evaluations of parent training programs (i.e., programs that included the active acquisition of parenting skills) to enhance behavior and adjustment in children aged 0-7. Characteristics of program content and delivery method were used to predict effect sizes on measures of parenting behaviors and children's externalizing behavior. After controlling for differences attributable to research design, program components consistently associated with larger effects included increasing positive parent-child interactions and emotional communication skills, teaching parents to use time out and the importance of parenting consistency, and requiring parents to practice new skills with their children during parent training sessions. Program components consistently associated with smaller effects included teaching parents problem solving; teaching parents to promote children's cognitive, academic, or social skills; and providing other, additional services. The results have implications for selection and strengthening of existing parent training programs.     

Understanding and Improving the Effectiveness of After-School Practice

The question driving research on after‐school programs is shifting from “do programs make a difference,” to “why are some programs effective while others are not?” This article draws on the work in this volume and related studies to suggest that there is an emerging consensus on the importance of staff‐youth interactions as a determinant of program effectiveness. The commentary recommends that future research should continue to focus on understanding and improving program practices at the point‐of‐service. In doing so, two lines of inquiry seem promising. The first involves linking measures of changes in staff‐youth interactions to changes in developmental outcomes. The second is to examine how policies or other interventions intended to improve program effectiveness affect the practices of line staff.     

Thinking About a Word—Love,for Example

What is it we do when we philosophize about a word? How are we to act as we ask the philosophical question par excellence, “What is … ?” These questions are addressed here with particular focus on Troy Jollimore's Love's Vision and contemporary theories of love. Jollimore's rationalist account of love, based on a specific understanding of “reasons for love,” illustrates a particular philosophical mistake: When we think about a word, we are prone to believe that even though “the sense of the word” that we investigate may be up for grabs, the other words we use when we do these investigations are not. Jollimore's exploration of love is guided by specific conceptions of “reasons” and “rationality” that remain unquestioned. The article argues that we may have to rethink a great number of words as we embark on the task of uncovering the sense of one word.     

Stimulus structures and mental representations in expert comprehension of computer programs

Comprehension of computer programs involves detecting or inferring different kinds of relations between program parts. Different kinds of programming knowledge facilitate detection and representation of the different textual relations. The present research investigates the role of programming knowledge in program comprehension and the nature of mental representations of programs; specifically, whether procedural (control flow) or functional (goal hierarchy) relations dominate programmers' mental representations of programs. In the first study, 80 professional programmers were tested on comprehension and recognition of short computer program texts. The results suggest that procedural rather than functional units form the basis of expert programmers' mental representations, supporting work in other areas of text comprehension showing the importance of text structure knowledge in understanding. In a second study 40 professional programmers studied and modified programs of moderate length. Results support conclusions from the first study that programs are first understood in terms of their procedural episodes. However, results also suggest that a programmer's task goals may influence the relations that dominate mental representations later in comprehension.     

Begging the Question: A Qualified Defense

This discussion examines two of the central notions at work in Sterba’s From Rationality to Equality: question-beggingness, and the notion of a rational requirement. I point out that, against certain unreasonable positions, begging the question is a perfectly reasonable option. I also argue that if we use the sense of “rational requirement” that philosophers ought (and tend) to have in mind when defending the idea that morality is rationally required, then Sterba has not succeed in defending this idea. Rather, he has at most demonstrated the rational preferability of morality over two other positions: an extreme egoism, and a very particular form of altruism. But another position exists: one that holds altruistic reasons to exist, and to be capable of justifying sacrifices, but that also holds that they do not require us to sacrifice our interests in the way that morality sometimes does require.     

Self-appraised social problem solving abilities, emotional reactions and actual problem solving performance

Self-report measures of social problem solving abilities have yet to be associated with objective problem solving performance in any consistent manner. In the present study, we investigated the relation of social problem solving abilities--as measured by the Social Problem Solving Skills Inventory--Revised (SPSI-R [Maydeu-Olivares, A. & D'Zurilla, T. J. (1996). A factor analytic study of the Social Problem Solving Inventory: an integration of theory and data. Cognitive Therapy and Research, 20, 115-133])--to performance on a structured problem solving task. Unlike previous studies, we examined the relation of problem solving skills to performance curves observed in repeated trials, while controlling for affective reactions to each trial. Using hierarchical modeling techniques, a negative problem orientation was significantly predictive of performance and this effect was not mediated by negative affectivity. Results are discussed as they pertain to contemporary models of social problem solving.     

Problem Variables that Promote Incubation Effects

Three studies sought to determine whether incubation effects could be reliably generated in a problem‐solving task. Experimental variables manipulated were the duration of the interval between two problem‐solving opportunities and the activity performed by the problem solvers during the interval. A multi‐solution anagram task was used which required problem solvers to generate five‐letter words from the letters in a ten‐letter “starter” word until they could produce no more words. After a break (the incubation period) the problem solvers returned to the anagram task anew. Some participants also engaged in an activity related to the anagram task during the break which was expected to prime potential solutions that would emerge during the second problem‐solving attempt. In all conditions problem solvers were able to generate new responses after the break, thus demonstrating a reliable incubation effect. The optimal incubation period was between 15 and 30 min long. The priming task increased the number of solutions to the anagram task on the second attempt, suggesting that exposure to solution ideas during the incubation period may facilitate an incubation effect during problem solving.     

Sense of Community in Clubhouse Programs: Member and Staff Concepts

Psychological sense of community within psychosocial rehabilitation clubhouse programs was examined using concept mapping with 18 members and 18 staff from 10 programs. Members identified four concepts: Recovery, social connections, membership, and tasks and roles. Members described hope and healing as aspects of recovery. Members' views on sense of community focused on the rehabilitation and social nature of the program. Staff also identified four concepts: Affiliation and support for members, shared experiences, clubhouse organization, and task and roles. The staff concept of clubhouse organization, which incorporated the ideas of leadership and organization of physical space and the concept of task and roles, was based on ideas of shared responsibility and clubhouse procedures. Staffs' views on sense of community strongly reflected their formal training in clubhouse principles. The relation of these concepts to McMillan and Chavis' theoretical framework for sense of community is discussed and recommendations for practice provided. Sandra E. Herman is now an independent program evaluation consultant. Catherine Ferguson is now an independent consultant on psychosocial programs.