The effects of cumulative practice on mathematics problem solving

This study compared three different methods of teaching five basic algebra rules to college students. All methods used the same procedures to teach the rules and included four 50-question review sessions interspersed among the training of the individual rules. The differences among methods involved the kinds of practice provided during the four review sessions. Participants who received cumulative practice answered 50 questions covering a mix of the rules learned prior to each review session. Participants who received a simple review answered 50 questions on one previously trained rule. Participants who received extra practice answered 50 extra questions on the rule they had just learned. Tests administered after each review included new questions for applying each rule (application items) and problems that required novel combinations of the rules (problem-solving items). On the final test, the cumulative group outscored the other groups on application and problem-solving items. In addition, the cumulative group solved the problem-solving items significantly faster than the other groups. These results suggest that cumulative practice of component skills is an effective method of training problem solving.     

Practice and forgetting effects on vocabulary memory: an activation-based model of the spacing effect

An experiment was performed to investigate the effects of practice and spacing on retention of Japanese–English vocabulary paired associates. The relative benefit of spacing increased with increased practice and with longer retention intervals. Data were fitted with an activation-based memory model, which proposes that each time an item is practiced it receives an increment of strength but that these increments decay as a power function of time. The rate of decay for each presentation depended on the activation at the time of the presentation. This mechanism limits long-term benefits from further practice at higher levels of activation and produces the spacing effect and its observed interactions with practice and retention interval. The model was compared with another model of the spacing effect (Raaijmakers, 2003) and was fit to some results from the literature on spacing and memory.     

A collaborative family-systemic approach to treating chronic illness: irritable bowel syndrome as exemplar

This article describes an evolving collaborative relationship between a family therapist and a physician focused on the treatment of irritable bowel syndrome, a highly prevalent disorder which has several psychological characteristics. We began with a unique approach utilizing (1) simultaneous treatment by both specialists; (2) a focus on the relationship context of illness. This approach draws on family systemic theory and practice as well as a circular model of mind and body interaction. Because the intervention was significantly helpful to patients, the premises which informed it were then incorporated into a five session group treatment model. Results and clinical report support the efficacy of a collaborative systemic approach between a medical specialist and family psychologist in treating adult chronic illness.     

Scientists in the Swamp: Narrowing the Language–Practice Gap in Community Psychology

As a confluence of unique values and activities, the collective practice of community psychology is difficult to characterize in a simple way. Increasingly, however, professional contexts are laden with pressure to define any practice—from library work to medical interventions—in the orderly, compact language of traditional science. This trend has historically been resisted in the field by those sensing a fundamental lack of fit between the fluid, emergent aspects of community psychological practice and the fixed, precise language of classic science. In response to this “language–practice gap,” some have attempted to adapt the traditional language of science to better fit the field's practice, while others have explored alternative languages of practice seemingly more indigenous to the messy “swamp” of actual communities. While the former effort leaves some theoretical contradictions intact, the latter tends to discount scientific identity entirely. This paper proposes a potential step forward by resituating questions of disciplinary language and identity within a current philosophical discourse where the nature of social science itself remains sharply contested. This suggests shifting attention away from “should we be a science?” to “what kind of science might we be after all?”; in turn, alternative languages may be re‐cast as legitimate contributors to a kind of science more authentic to human communities—even a viable “science in the swamp.” One such language–philosophical hermeneutics—is presented as a particularly valuable supplement to traditional science. Illustrations highlight ways that hermeneutics may advance the formal language of the field towards a closer fit of what actually happens in practice, while preserving and even bolstering the empirical rigor and scientific identity of the field.     

Direct and Indirect Effects of Completion Versus Accuracy Contingencies on Practice-Exam and Actual-Exam Performance

Students in four sections of an undergraduate educational course (two large and two small sections) took out-of-class practice exams prior to actual exams for each of five course units. Each course unit consisted of five class sessions focusing on a specific developmental theme. Some sections received practice-exam credit based on the number of items completed, whereas other sections received practice-exam credit based on the number of items answered accurately. The contingencies were applied only to the practice exams. A two-way MANOVA included two independent variables (practice-exam contingency and group size) and two dependent variables (practice-exam performance and unit-exam performance). The analysis revealed a main effect for both independent variables across both dependent variables, with students performing better under the accuracy than the completion contingency and better in the small than the large groups. One exception to this overall pattern was a non-significant difference between the large and small groups on the practice exams across both contingencies.     

“Things that went well — No serious injuries or deaths”: Ethical reasoning in a normal engineering design process

We argue that considering only a few ‘big’ ethical decisions in any engineering design process — both in education and practice — only reinforces the mistaken idea of engineering design as a series of independent sub-problems. Using data collected in engineering design organisations over a seven year period, we show how an ethical component to engineering decisions is much more pervasive. We distinguish three types of ethical justification for engineering decisions: (1) consequential, (2) deontological or non-consequential, and (3) virtue-based. We find that although there is some evidence for engineering designers as ‘classic’ consequentialists, a more egocentric consequentialism would appear more fitting. We also explain how the idea of a ‘folk ethics’ — a justification in the second category that consciously weighs one thing with another — fits with the idea of the engineering design process as social negotiation rather than as technological progress.     

论中国古代德性主义经济伦理思想的萌芽

周代的“敬德保民”思想中包括了三个方面的经济伦理思想内涵：一、“无逸”的劳动伦理观和“孝养父母”的生产观;二、反对“独专于利”,主张利益分配的公正性;三、在生活方式上,主张“恭俭惟德”的消费观。这些思想具有德性主义的性质。     

Expertise and the evolution of consciousness

This paper argues that expertise can be used as an indicator of consciousness in humans and other animals. The argument is based on the following observations: (1) expertise and skill acquisition require deliberate practice; and (2) the characteristics of deliberate practice such as performance evaluation against a more proficient model, retention of voluntary control over actions, self-monitoring, goal-setting, error-detection and correction, and the construction of hierarchically organized retrieval structures are outside of the currently understood bounds of unconscious processing. Thus, to the extent that evidence of expertise exists in an organism, evidence of conscious experience is also present. Two important implications arise from this conclusion: (1) evidence of expertise can be used as the basis for cross-species comparisons of consciousness; and (2) the evolution of human consciousness can be assessed using fossil evidence of skilled behavior as a measure of consciousness.     

Motor learning without physical practice: The effects of combined action observation and motor imagery practice on cup-stacking speed

In this study we explored training effects for combined action observation and motor imagery (AO + MI) instructions on a complex cup-stacking task, without physical practice. Using a Graeco-Latin Square design, we randomly assigned twenty-six participants into four groups. This counterbalanced the within-participant factor of practice condition (AO + MI, AO, MI, Control) across four cup-stacking tasks, which varied in their complexity. On each of the three consecutive practice days participants experienced twenty trials under each of the three mental practice conditions. On each trial, a first-person perspective video depicted bilateral cup-stacking performed by an experienced model. During AO, participants passively observed this action, responding only to occasional colour cues. For AO + MI, participants imagined performing the observed action and synchronised their concurrent MI with the display. For MI, a sequence of pictures cued imagery of each stage of the task. Analyses revealed a significant main effect of practice condition both at the ’surprise’ post-test (Day 3) and at the one-week retention test. At both time points movement execution times were significantly shorter for AO + MI compared with AO, MI and the Control. Execution times were also shorter overall at the retention compared with the post-test. These results demonstrate that a complex novel motor task can be acquired without physical training. Practitioners can therefore use AO + MI practice to supplement physical practice and optimise skill learning.     

Patient-targeted googling by psychological therapists: A narrative review of the literature and ethical implications

Background

“Patient-Targeted Googling” (PTG) refers to a healthcare professional using the Internet to discover information about a patient. The present review explores PTG by psychological therapists. The review focused on the prevalence of PTG, how often consent is sought from the patient, and the motivations for and consequences of PTG.

Method

A narrative literature review of published PTG studies was undertaken. Potentially eligible studies were identified by searching PsycINFO, PsycARTICLES, Psychology and Behavioural Sciences Collection, and MEDLINE. Results were screened for suitability for inclusion in the sample (n = 9). All studies were appraised for quality using a structured tool developed for this review.

Results

PTG prevalence rates ranged from 20% to 98%, with rates of non-consent ranging from 60% to 84%. Motivations for PTG included curiosity, to gather new information and to verify existing information. Consequences of PTG included enhancing the therapist's sense of safety and causing harm to the therapeutic relationship.

Discussion

Current literature on PTG is limited and focussed largely in the United States. This review revealed no published PTG studies including UK-based psychological therapists, as well as issues in defining and operationalising PTG. Further research is needed to understand the prevalence of PTG by UK-based psychological therapists, as well as the motivations behind, and consequences of, PTG. This evidence base will inform the development of PTG professional guidelines and training, neither of which currently exist for therapists practising in the UK. Both would be timely given the increasing move of the therapeutic frame to the online environment due to the COVID-19 pandemic.