A theory of instruction for introductory programming skills

ABSTRACT

Background and Context: Current introductory instruction fails to identify, structure, and sequence the many skills involved in programming.

Objective: We proposed a theory which identifies four distinct skills that novices learn incrementally. These skills are tracing, writing syntax, comprehending templates (reusable abstractions of programming knowledge), and writing code with templates. We theorized that explicit instruction of these skills decreases cognitive demand.

Method: We conducted an exploratory mixed-methods study and compared students’ exercise completion rates, error rates, ability to explain code, and engagement when learning to program. We compared material that reflects this theory to more traditional material that does not distinguish between skills.

Findings: Teaching skills incrementally resulted in improved completion rate on practice exercises, and decreased error rate and improved understanding of the post-test.

Implications: By structuring programming skills such that they can be taught explicitly and incrementally, we can inform instructional design and improve future research on understanding how novice programmers develop understanding.     

Creating a distinctive business career outcome programme

This article describes how a small private business school, accredited by the Association to Advance Collegiate Schools of Business, reengineered its career services programme to become a premier programme in the United States. Drawing on theory of involvement, the research gives business schools a strategy to improve business career placement through capital support, student engagement, corporate engagement, alumni engagement, faculty engagement and continuous improvement initiatives. Further, two major outcome categories (i.e. supportive outcomes and end outcomes) are identified and various measures are discussed. Supportive outcomes indicate growth in the number of on-campus business recruiting career events, high internship evaluations by internship supervisors and significant increase in students’ satisfaction with career services. End outcomes provide strong evidence for placement rate success with a 98% career placement rate for the past four years, significant increase on mean starting salaries of graduates across the years following the implementation of the strategic changes, improved quality of positions attained by graduates, and professional success of alumni in their positions. The impact of strategic changes on school ranking, enrolment and donor support are also discussed. The research proposes a model of student career success and identifies various elements influencing the success of such programmes.     

Do We Fear Ageing? A Multidimensional Approach to Ageing Anxiety

Ageing anxiety is the expression of peoples' fear of ageing (Lynch, 2000 Lynch, S. M. (2000). Measurement and prediction of aging anxiety. Research on Aging, 22(5), 533.[Crossref], [Web of Science ®] , [Google Scholar]). Despite greater longevity in the population, there is a lack of research into this aspect of life (Lasher &; Faulkender, 1993 Lasher, K. P., &; Faulkender, P. J. (1993). Measurement of aging anxiety: Development of the Anxiety about Aging Scale. The International Journal of Aging &; Human Development, 37(4), 247–259.[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]). This research explored fears of ageing across four dimensions: Fear of Old People, Physical Appearance, Psychological Concerns, and Fear of Losses. Three hundred and forty eight participants aged 18–88 participated in an online survey. Findings were: (a) men and women have different fears of ageing; (b) greater quality contact is related to less ageing anxiety; (c) poor health is related to greater ageing anxiety, (d) ageism, defined by Nelson (2005 Nelson, T. D. (2005). Ageism: Prejudice against our feared future self. Journal of Social Issues, 61(2), 207–221.[Crossref], [Web of Science ®] , [Google Scholar]) as prejudice toward ageing is positively correlated with ageing anxiety. The implications of these findings are that better quality contact and more positive attitudes toward ageing are associated with less ageing anxiety. As such, possible key target areas in developing appropriate interventions are provided, with hope to prepare adults of all ages for the inevitable—life is a terminal illness, so enjoy while you can.     

车轮下的丝绸之路

青春,在一番又一番冒险的经历中成长。看看本文中的年轻人,如何以他的车轮品味不同的文化韵味。1蒙古包、牦牛皮一天清早,我在路边休息了一宿之后,醒来发现我的帐篷旁站着一个男孩子,透过遮帘窥视着我。我因身体疼痛、脱水而昏倒了。几个小时过后,我又醒过来,再一次发现他仍在注视着我,手里拿一瓶酸奶。在狂风中他帮我收起帐篷,把我带到他的住地。     

Parameters in television captioning for deaf and hard-of-hearing adults: effects of caption rate versus text reduction on comprehension

Caption rate and text reduction are factors that appear to affect the comprehension of captions by people who are deaf or hard of hearing. These 2 factors are confounded in everyday captioning; rate (in words per minute) is slowed by text reduction. In this study, caption rate and text reduction were manipulated independently in 2 experiments to assess any differential effects and possible benefits for comprehension by deaf and hard-of-hearing adults. Volunteers for the study included adults with a range of reading levels, self-reported hearing status, and different communication and language preferences. Results indicate that caption rate (at 130, 180, 230 words per minute) and text reduction (at 84%, 92%, and 100% original text) have different effects for different adult users, depending on hearing status, age, and reading level. In particular, reading level emerges as a dominant factor: more proficient readers show better comprehension than poor readers and are better able to benefit from caption rate and, to some extent, text reduction modifications.     

Acculturation, substance use, and deviant behavior: examining separation and family conflict as mediators

This longitudinal study examined how separation and family conflict mediated the effects of two acculturation variables (English language use and generational status) on substance use (alcohol, tobacco, and marijuana use) and deviant behavior outcomes in a Mexican American high school age sample. Structural equation modeling indicated that separation was a significant mediator of the relationship between acculturation and alcohol use, tobacco use, and deviant behavior. Family conflict mediated the effects of acculturation on marijuana use and deviant behavior. Model comparisons across gender groups suggested that generational status was an influential acculturation measure for females but not males. Additionally, English language use maintained a direct effect on marijuana use among females, whereas this relationship was mediated by separation for males.