How Single Older Men Reach Poverty and Its Relationship with Help-Seeking Preferences1

This study aimed to clarify patterns of poverty among single older men and examine this population's help-seeking preferences. Semi-structured interviews were conducted with 83 older single men in poverty. Three main patterns of poverty were identified: lifelong, job turnover, and retirement. A common characteristic among these patterns indicated that they did not recognize their difficulties as problems. Furthermore, we identified five groups of help-receiving preferences: independent, resignation, mutual-aid, other-oriented, and seeking. Among these, the independent and resignation groups were influenced by past experiences of failing to seek help, which was characteristic of the lifelong pattern type. Furthermore, the mutual-aid and seeking groups were oriented toward positive help-seeking, which was characteristic of the job turnover and retirement pattern types. However, neither group actively sought help for social isolation or lack of social support, suggesting that it would have been challenging to establish social relationships early on in life. Thus, it is important to establish initiatives that enable older people to understand their current state and to think about their future depending on three patterns of poverty.     

A preliminary investigation of fixed and repetitive models during object imitation training

Empirically based guidelines for imitation training for children with Autism Spectrum Disorder (ASD) are limited and there is no existing evidence about what types of imitative models foster faster acquisition of imitation in children with ASD. We compared rates of acquisition for two different methods for presenting the imitative model (i.e., repetitive, fixed) in simple (Experiment 1) and conditional (Experiment 2) discrimination arrangements. The results suggest that some children with ASD may acquire imitation more rapidly when repetitive models, rather than fixed models are used to present the target skill. In Experiment 3, we investigated the features of object imitation models that might influence acquisition. The results of Experiment 3 suggest that the dynamic nature of repetitive models might be responsible for the differential acquisition we observed in the earlier two Experiments. Additionally, the presence of an outcome (e.g., stacked blocks) during training does not enhance acquisition.     

Words, hemispheres, and dissociable subsystems: the effects of exposure duration, case alternation, priming, and continuity of form on word recognition in the left and right visual fields

Three experiments explore aspects of the dissociable neural subsystems theory of hemispheric specialisation proposed by Marsolek and colleagues, and in particular a study by [Deason, R. G., & Marsolek, C. J. (2005). A critical boundary to the left-hemisphere advantage in word processing. Brain and Language, 92, 251–261]. Experiment 1A showed that shorter exposure durations for lower-case words (13 ms) are associated with reduced right visual field (RVF) advantages compared with longer exposure durations (144 ms). Experiment 1B compared report accuracy for lower case and mixed case words at the same exposure duration (144 ms). The RVF advantage was reduced for mixed case words due to case alternation having more of an adverse effect in the RVF than in the LVF. Experiment 2 tested a different prediction of dissociable neural subsystems theory. Four-letter words were presented in mixed case in the LVF or RVF for 100 ms. They were preceded at the same location by a prime which could be in the same word in the same alternation pattern (e.g., FlAg–FlAg), the same word in the opposite alternation pattern (e.g., fLaG–FlAg), or an unrelated letter string in the same or opposite case alternation pattern (WoPk–FlAg or wOpK–FlAg). Relative to performance in the letter string prime conditions, which did not differ significantly between the two visual fields, there was more of an effect of word primes in the RVF than in the LVF. Importantly, the benefit of a word prime was the same whether the prime was in the same alternation pattern or was in the opposition alternation pattern. We argue that these results run contrary to the predictions of dissociable neural subsystems theory and are more compatible with theories which propose that a left hemisphere word recognition system is responsible for identifying written words, whether they are presented in the LVF or the RVF, and that letters are processed to an abstract graphemic level of representation before being identified by that system.     

Rhythmic alternation and the optional complementiser in English: new evidence of phonological influence on grammatical encoding

In a recall-based spoken production experiment, native English-speaking participants' variable use of the complementiser that to introduce the sentential complement in sentences like Henry knew (that) Lucy/Louise washed the dishes was found to be related to whether that inclusion/omission resulted in an alternating sequence of stressed and unstressed syllables between the verb of the main clause and the subject of the complement clause. This finding is discussed in relation to the question of whether and how phonological encoding can influence grammatical encoding in spoken language production.     

归类不确定情景下特征推理的综合条件概率模型

用大学生被试,通过三个实验探讨在集中呈现类别成员样本信息的归类不确定情景下的特征推理。实验结果表明,单纯的归类确定性程度和靶类别靶特征的代表性并不直接影响被试的特征推理,而是预测特征相对于目标特征的综合条件概率直接影响被试的特征推理;特征推理不是基于类别中介的间接推理,而是基于特征关联综合条件概率的直接推理。实验结果支持作者提出的预测特征综合条件概率模型。     

CREATING SINGLE‐SUBJECT DESIGN GRAPHS IN MICROSOFT EXCEL™ 2007

Over 10 years have passed since the publication of Carr and Burkholder's (1998) technical article on how to construct single‐subject graphs using Microsoft Excel. Over the course of the past decade, the Excel program has undergone a series of revisions that make the Carr and Burkholder paper somewhat difficult to follow with newer versions. The present article provides task analyses for constructing various types of commonly used single‐subject design graphs in Microsoft Excel 2007. The task analyses were evaluated using a between‐subjects design that compared the graphing skills of 22 behavior‐analytic graduate students using Excel 2007 and either the Carr and Burkholder or newly developed task analyses. Results indicate that the new task analyses yielded more accurate and faster graph construction than the Carr and Burkholder instructions.     

The Effects of Using Response Cards on Student Participation, Academic Achievement, and On-Task Behavior During Whole-Class, Math Instruction

This study evaluated the effects of using response cards during whole-group math instruction in a fourth-grade classroom, using an ABA research design. During both A and B conditions the classroom teacher conducted her math lessons as planned. However during the A conditions, hand-raising (HR) was in effect. That is, when the teacher asked a question she instructed the students to raise their hands and after each question she called on one student whose hand was raised. During the B condition, response cards (RC) were in effect. Whenever she asked a question, the teacher instructed the entire class to write their answers on individual response cards. After each question, the teacher instructed the entire class to hold up their RC. Data were collected on five students who represented the class range in general level of participation, academic skills, and on-task behavior. Results indicated that student participation, specifically the number of student-initiated opportunities to respond and the number of student responses were higher when using RC than when HR was in effect. Students scored higher on the weekly math quiz after the RC condition than after the HR conditions. The percentage of intervals that students were on-task also was higher when RC were used.     

An intervention using morphology to derive word meanings for English language learners

Many English language learners (ELL) experience academic and reading difficulties compared to native English speakers (NES). Lack of vocabulary knowledge is a contributing factor for these difficulties. Teaching students to analyze words into their constituent morphemes (meaningful word units) in order to determine the meaning of words may be an avenue to increase vocabulary knowledge. This study investigated potential benefits of morphological instruction for learning vocabulary words and generalizing taught words to untaught words containing these morphemes. Nine fourth‐ and fifth‐grade ELL with reading difficulties participated in a multiple baseline, single‐case design study. Visual analysis of the results revealed a functional relation between the intervention and an increase in participants' vocabulary scores with 90% to 100% nonoverlapping data for eight participants. The effects of training generalized to untaught words. These findings suggest that morphological analysis is a promising approach to increase vocabulary knowledge of ELL.     

Replicability and randomization test logic in behavior analysis

Randomization tests are a class of nonparametric statistics that determine the significance of treatment effects. Unlike parametric statistics, randomization tests do not assume a random sample, or make any of the distributional assumptions that often preclude statistical inferences about single‐case data. A feature that randomization tests share with parametric statistics, however, is the derivation of a p‐value. P‐values are notoriously misinterpreted and are partly responsible for the putative “replication crisis.” Behavior analysts might question the utility of adding such a controversial index of statistical significance to their methods, so it is the aim of this paper to describe the randomization test logic and its potentially beneficial consequences. In doing so, this paper will: (1) address the replication crisis as a behavior analyst views it, (2) differentiate the problematic p‐values of parametric statistics from the, arguably, more useful p‐values of randomization tests, and (3) review the logic of randomization tests and their unique fit within the behavior analytic tradition of studying behavioral processes that cut across species.     

Two open source designs for a low‐cost operant chamber using Raspberry Pi™

After almost a century of use and development, operant chambers remain a significant financial investment for scientists. Small powerful single‐board computers such as the Raspberry Pi? offer researchers a low‐cost alternative to expensive operant chambers. In this paper, we describe two new operant chambers, one using nose‐poke ports as operanda and another using a touchscreen. To validate the chamber designs, rats learned to perform both visual discrimination and delayed alternation tasks in each chamber. Designs and codes are open source and serve as a starting point for researchers to develop behavioral experiments or educational demonstrations.