A Bayesian Theory of Sequential Causal Learning and Abstract Transfer

Two key research issues in the field of causal learning are how people acquire causal knowledge when observing data that are presented sequentially, and the level of abstraction at which learning takes place. Does sequential causal learning solely involve the acquisition of specific cause‐effect links, or do learners also acquire knowledge about abstract causal constraints? Recent empirical studies have revealed that experience with one set of causal cues can dramatically alter subsequent learning and performance with entirely different cues, suggesting that learning involves abstract transfer, and such transfer effects involve sequential presentation of distinct sets of causal cues. It has been demonstrated that pre‐training (or even post‐training) can modulate classic causal learning phenomena such as forward and backward blocking. To account for these effects, we propose a Bayesian theory of sequential causal learning. The theory assumes that humans are able to consider and use several alternative causal generative models, each instantiating a different causal integration rule. Model selection is used to decide which integration rule to use in a given learning environment in order to infer causal knowledge from sequential data. Detailed computer simulations demonstrate that humans rely on the abstract characteristics of outcome variables (e.g., binary vs. continuous) to select a causal integration rule, which in turn alters causal learning in a variety of blocking and overshadowing paradigms. When the nature of the outcome variable is ambiguous, humans select the model that yields the best fit with the recent environment, and then apply it to subsequent learning tasks. Based on sequential patterns of cue‐outcome co‐occurrence, the theory can account for a range of phenomena in sequential causal learning, including various blocking effects, primacy effects in some experimental conditions, and apparently abstract transfer of causal knowledge.     

Magnetoencephalography and magnetic source imaging: technology overview and applications in psychiatric neuroimaging

Magnetoencephalography (MEG) is an electrophysiologic brain imaging technology that has been applied to the study of mental illness, particularly schizophrenia. Like electroencephalography, it provides excellent temporal resolution, and in combination with magnetic resonance imaging, can also provide good spatial resolution. Studies of the auditory system in schizophrenia using MEG have demonstrated an abnormality in functional cerebral asymmetry, in which persons with schizophrenia typically show reduced, or reversed, cerebral asymmetry compared with normal subjects. This abnormality is sex-specific; it is more pronounced in males with schizophrenia. These findings have not been demonstrated using other neuroimaging strategies. Thus, MEG appears to offer a unique and valuable contribution to psychiatric neuroimaging. Current research and clinical applications of MEG are limited, however, by the high cost of instrumentation. The cost of MEG systems should improve as more applications are developed, in schizophrenia as well as other neuropsychiatric conditions, and hospitals begin to invest in the technology.     

The Animal Preference Test and its relationship to behavioral problems in young children

We compared performance on the Animal Preference Test; (APT; Van Krevelen, 1955) with parental assessment of children's behavioral problems as measured by the Achenbach Child Behavior Checklist (CBCL; Achenbach & Edelbrock, 1986). Forty Black and Hispanic 6- to 12-year-old boys were asked to name the three animals they would most like to be and the three animals they would least like to be if they could not be a human being. Reasons for animal choice were categorized into one of four theme categories: aggression, autonomy, nurturance, and pleasure-beauty. Each category had a high degree (91%) of interrater reliability. When reasons for animal choice were dichotomized into aggression/autonomy versus nurturance/pleasure-beauty, children who rejected animals because of their nurturant or aesthetic qualities displayed significantly greater aggressive (p less than .001) and depressed (p less than .05) behaviors on the CBCL. The choice of animals the subjects would most like to be was not meaningfully associated with CBCL performance. Further research with this easily administered and reliably scored projective test appears warranted.     

Spelling development in the Spanish language

This study focused on spelling development in Spanish children from elementary grades. A sample of 1045 was selected from 2nd to 6th grade belonging to four schools in Tenerife Island with an age range between 7 and 12 years old (M = 113.8, SD = 17.6). We administered a standardized writing test that includes diverse subtests to assess spelling, ruled and not ruled, and various written composition tasks (i.e., writing a story based on vignettes, describing a character and writing a story). We calculated the average of correct spellings in each variable and school level, and we also analyzed the type of misspellings that children made across different writing tasks. We found that spelling is acquired by 4th-grade children when it is not ruled, whereas the spelling of ruled words is acquired by 5th-grade children. When we analyzed the misspellings in a dictation task, we found that the children confused spelling of the graphemes c/s/z/x. Across different writing tasks, we found that students committed more misspellings with the graphemes b/v, h y c/s/z/x before they finished the 4th elementary grade.     

Validity evidence of the Health-Related Quality of Life for Drug Abusers Test based on the Biaxial Model of Addiction

The aim of this work is to show evidence of the validity of the Health-Related Quality of Life for Drug Abusers Test (HRQoLDA Test). This test was developed to measure specific HRQoL for drugs abusers, within the theoretical addiction framework of the biaxial model. The sample comprised 138 patients diagnosed with opiate drug dependence. In this study, the following constructs and variables of the biaxial model were measured: severity of dependence, physical health status, psychological adjustment and substance consumption. Results indicate that the HRQoLDA Test scores are related to dependency and consumption-related problems. Multiple regression analysis reveals that HRQoL can be predicted from drug dependence, physical health status and psychological adjustment. These results contribute empirical evidence of the theoretical relationships established between HRQoL and the biaxial model, and they support the interpretation of the HRQoLDA Test to measure HRQoL in drug abusers, thus providing a test to measure this specific construct in this population.     

Teaching oddity and insertion to Head Start children: An economical cognitive intervention

Two interventions were offered to Head Start preschoolers. Half of the children played numerous learning set games designed to teach the children (1) the oddity principle and (2) how to insert objects into a series. Mastery of these concepts is theoretically an important aspect of school readiness. The other half of the children engaged in the I Can Problem Solve (ICPS) exercises, a program designed to increase the children's competency in recognizing and responding to other people's feelings. The children who played the learning set games became superior at oddity and insertions with manipulable objects, and generalized these games to workbook-like formats resembling those encountered in kindergarten. They also scored higher on the numeracy and memory scales of the McCarthy Scales of Children's Abilities, indicating that mastery of oddity and insertions may have served as foundations for further cognitive growth. The children who participated in the ICPS exercises became superior at creating solutions to interpersonal problems, as measured by the Preschoolers Interpersonal Problem Solving Scale. The differences in the outcomes indicate that both interventions were successful in their own domains. The advantage the cognitive intervention produced on the McCarthy Scales suggests that oddity and insertion abilities may be a foundation in fact as well as in theory for general cognitive growth at this age.     

Proposition 187 reexamined: Attitudes toward immigration among California voters

The purposes of this study were to examine socio-demographic predictors of attitudes toward immigration in a community-based sample (N = 494) from the Los Angeles area; and to explore the relationship between attitudes toward immigration and the providing of educational and health services to the children of undocumented immigrants. Not providing services to the children of undocumented immigrants was a key element of California's Proposition 187. Attitudes toward immigration were measured with the Attitudes Toward Immigration Scale (ATIS). The providing of services was measured through the participants' evaluations of a school scenario and a health care scenario. Results indicated that participants who were middle-aged or older, less educated, identified as Republican, and were third generation or greater were more likely to hold negative attitudes toward immigration. Furthermore, participants holding negative attitudes toward immigration were less likely to provide education and health care services to the children of undocumented immigrants.     

Enhancing Poverty-Abatement Programs: a Subjective Well-Being Contribution

This paper questions the assumption used in designing social policies that raising people’s income automatically translates into greater well-being. Based on a subjective well-being approach and a representative survey from Costa Rica the paper shows that there is substantial dissonance in the classification of persons as poor and as being in well-being deprivation. The existence of dissonances leads to the conceptualization of different trajectories out-of-poverty and into well-being. Public policies oriented towards the abatement of income poverty can have a greater impact on people’s well-being if they recognize the complexity of human beings and acknowledge that their programs affect satisfaction in all domains of life. The paper states that public policy should not only be concerned with getting people out of income poverty, but also with placing them in a life-satisfying situation. The paper also discusses strategies that could improve poverty-abatement programs.     

Summer Camp Program for Children With Obsessive–Compulsive Disorder: Description and Preliminary Observations

Summer camp programming has a rich history of promoting childhood development. In the care of children with specific childhood psychiatric disorders, the incorporation of targeted cognitive-behavioral principles provides an opportunity to marry targeted evidence-based practices with broader development, in particular social, emotional, and fine- and gross-motor development. This union is synergistic, providing the practitioner with an opportunity to employ cognitive-behavioral practices in an environment that may overcome common barriers to effective interventions outside the scope of the targeted illness. In this paper, the authors describe the preliminary findings concerning a weeklong, 25-hour summer camp program targeting childhood obsessive–compulsive disorder (OCD). Nine children ages 9–12 years participated in this pilot program. Child and parent feedback alike suggested strong treatment acceptability and efficacy in targeting both core symptoms of OCD as well as associated developmental deficits. The camp’s implementation of exposure and response prevention enables an opportunity to report on the capability of employing these strategies in a summer camp setting. In conjunction with an evidence-based treatment program for childhood OCD, a summer camp program specifically targeted for children with OCD presents a valuable tool for improving child welfare and reducing functional impairments.     

Pragmatics of the Development of Personal Identity in Adolescents in the Latin American Context

The present work proposes a pragmatic perspective of the development of personal identity. Such perspective is based on a unifying vision that incorporates the contribution of communicative pragmatics and becomes aware of the contribution of semiotics to psychology, without leaving aside the eriksonian point of view and other significant contributions in the field. The article defines identity in adolescence from a development approach, and adopts a systemic perspective concerning the insertion of adolescents in their context of formation as individuals. It then proposes a way to understand identity from a pragmatic-communicative perspective. Finally, it introduces two communicative use contexts from which personal identity can emerge, showing the importance of communication and language in the formation and development of identity.