Socio-economic status,social class and memory performance: a critical response to Herrmann and Guadagno (1997)

Herrmann and Guadagno (1997) reviewed evidence concerning the relationship between memory performance and socio-economic status (SES). As a measure of social stratification, SES is narrow and ethnocentric, and it ignores the role of social prestige, power and status. The selection of research for quantitative analysis and the measure of effect size used by Herrmann and Guadagno are criticized. Across the available corpus of studies, there is a highly significant relationship between SES and memory performance, but this varies systematically from one task to another and between different research studies using the same task. This indicates that the effects of SES on memory are mediated by the content and the context of learning. Copyright © 1998 John Wiley & Sons, Ltd.     

Why Socioeconomic Status Affects the Health of Children

Abstract— This article provides an overview of research on socioeconomic status (SES) and physical health in childhood. SES has a gradient relationship with children's health, such that for each incremental increase in SES, there is a comparable benefit in children's health. In this article, I discuss psychosocial mechanisms underlying this association and argue that it is important to utilize knowledge about how the relationship between SES and health changes with age to inform a developmentally plausible search for mediators of this relationship. Furthermore, SES at different points in a child's lifetime may have different effects on health. I advocate an interdisciplinary approach to searching for mediators that would allow researchers to understand how characteristics of society, the neighborhood, the family, and the individual child are involved in the processes linking SES and children's health.     

Further consideration of the role of socio-economic status in memory performance

In his commentary, Richardson criticizes the analysis of the relationship between socio-economic status (SES) and memory performance as presented by Herrmann and Guadagno (1997). Richardson's criticism addresses Herrmann and Guadagno's procedures for classifying economic backgrounds of subjects and the statistics they used to analyze the effects of SES and memory. We believe that all of these points are worth considering but suggest that it is too early in this research area to definitively settle on either (a) the best procedure for classifying SES or (b) the most effective statistical method for post-hoc analysis of memory data. The underlying issues are too complex and the number of investigations too few to argue that one procedure or method is right and the other wrong. Alternatively, Richardson's commentary agrees with ours in two important ways. Richardson's article and ours both assert that economic background is clearly a relevant variable in explaining memory performance. In addition, both articles recommend that memory and cognitive researchers take account of economic well being in future memory research. Copyright © 1998 John Wiley & Sons, Ltd.     

Socioeconomic status and executive function: developmental trajectories and mediation

Childhood socioeconomic status (SES) predicts executive function (EF), but fundamental aspects of this relation remain unknown: the developmental course of the SES disparity, its continued sensitivity to SES changes during that course, and the features of childhood experience responsible for the SES–EF relation. Regarding course, early disparities would be expected to grow during development if caused by accumulating stressors at a given constant level of SES. Alternatively, they would narrow if schooling partly compensates for the effects of earlier deprivation, allowing lower‐SES children to ‘catch up’. The potential for later childhood SES change to affect EF is also unknown. Regarding mediating factors, previous analyses produced mixed answers, possibly due to correlation amongst candidate mediators. We address these issues with measures of SES, working memory and planning, along with multiple candidate mediators, from the NICHD Study of Early Childcare (n = 1009). Early family income‐to‐needs and maternal education predicted planning by first grade, and income‐to‐needs predicted working memory performance at 54 months. Effects of early SES remained consistent through middle childhood, indicating that the relation between early indicators of SES and EF emerges in childhood and persists without narrowing or widening across early and middle childhood. Changes in family income‐to‐needs were associated with significant changes in planning and trend‐level changes in working memory. Mediation analyses supported the role of early childhood home characteristics in explaining the association between SES and EF, while early childhood maternal sensitivity was specifically implicated in the association between maternal education and planning. Early emerging and persistent SES‐related differences in EF, partially explained by characteristics of the home and family environment, are thus a potential source of socioeconomic disparities in achievement and health across development.     

Altruistic or selfish? Responses when safety is threatened depend on childhood socioeconomic status

Altruism is an effective method of coping with threats. This research explored the relationship between childhood socioeconomic status (SES) and altruism under different situations. The results of five studies provided reliable evidence that safety-threat conditions moderated the relationship between childhood SES and altruism. Individuals with higher childhood SES exhibited higher altruistic intentions (Studies 1 and 2) and behaviors (Study 3) when they were manipulated to imagine a safety threat scenario (Study 1), when viewing pictures of disasters (Study 2), and when they were manipulated to believe that their health was under threat (Study 3). However, their childhood SES had no significant impact on their altruistic intentions and behaviors in relatively safe environments (Studies 1–3). This effect was again tested in more realistic environmental conditions using a large-scale survey in Study 4. In Study 5, we explored the underlying mechanism behind the earlier findings (i.e., temporal discounting).     

The effects of socioeconomic status on working memory in childhood are partially mediated by intersensory processing of audiovisual events in infancy

Socioeconomic status (SES) is a well-established predictor of individual differences in childhood language and cognitive functioning, including executive functions such as working memory. In infancy, intersensory processing—selectively attending to properties of events that are redundantly specified across the senses at the expense of non-redundant, irrelevant properties—also predicts language development. Our recent research demonstrates that individual differences in intersensory processing in infancy predict a variety of language outcomes in childhood, even after controlling for SES. However, relations among intersensory processing and cognitive outcomes such as working memory have not yet been investigated. Thus, the present study examines relations between intersensory processing in infancy and working memory in early childhood, and the role of SES in this relation. Children (N = 101) received the Multisensory Attention Assessment Protocol at 12-months to assess intersensory processing (face-voice and object-sound matching) and received the WPPSI at 36-months to assess working memory. SES was indexed by maternal education, paternal education, and income. A variety of novel findings emerged. 1) Individual differences in intersensory processing at 12-months predicted working memory at 36-months of age even after controlling for SES. 2) Individual differences in SES predicted intersensory processing at 12-months of age. 3) The well-established relation between SES and working memory was partially mediated by intersensory processing. Children from families of higher-SES have better intersensory processing skills at 12-months and this combination of factors predicts greater working memory two years later at 36-months. Together these findings reveal the role of intersensory processing in cognitive functioning.     

Family socio-economic status and children’s executive function: The moderating effects of parental subjective socio-economic status and children’s subjective social mobility

Family socio-economic status (SES) is significantly related to disparities in children’s executive function. Children from economically disadvantaged backgrounds perform worse on executive function tasks than their peers from high-SES families. The protective factors in the relationship between SES and executive function have not been sufficiently investigated, especially from the perspective of parents’ and children’s perceptions and expectations regarding SES. Therefore, this study aimed to examine whether parental subjective SES and children’s subjective social mobility separately moderated the relationship between family SES and children’s executive function among 885 participants aged 9–13 years. The results showed that family SES was positively related to the three components of executive function (cognitive flexibility, inhibitory control, and working memory). Moreover, the relationship between SES and cognitive flexibility was weak among the children with a high level of subjective social mobility or those whose parents had high levels of subjective SES. Among children from families with economic hardship, subjective social mobility is a potential protective factor mitigating the negative effects of low family SES on their cognitive flexibility.     

Thoughts about a successful future encourage action in the face of challenge

College environments can put lower socioeconomic status (SES) female students at particular risk of withdrawing during challenging academic situations. However, thinking about reaching a successful future identity may encourage these students to take action rather than withdraw. In a laboratory experiment, we tested the hypothesis that imagining a successful future identity would help lower SES female students to actively and successfully confront challenging tasks (i.e., a mock student–faculty interaction and difficult academic test). As predicted, when future identities were cued rather than past identities, lower SES female students demonstrated greater action readiness. Specifically, they showed more expansive body posture during the mock interaction and more attempts to complete the academic test, which led to better performance. The motivation to take action among higher SES and male students, who are at lower risk of vulnerability in college environments, was not influenced by future identities.     

Socioeconomic differences in children's health: how and why do these relationships change with age?

The effects of socioeconomic status (SES) on health are well documented in adulthood, but far less is known about its effects in childhood. The authors reviewed the literature and found support for a childhood SES effect, whereby each decrease in SES was associated with an increased health risk. The authors explored how this relationship changed as children underwent normal developmental changes and proposed 3 models to describe the temporal patterns. The authors found that a model's capacity to explain SES-health relationships varied across health outcomes. Childhood injury showed stronger relationships with SES at younger ages, whereas smoking showed stronger relationships with SES in adolescence. Finally, the authors proposed a developmental approach to exploring mechanisms that link SES and child health.     

Visual search proceeds concurrently during the attentional blink and response selection bottleneck

It is well known that human information processing comprises several distinct subprocesses—namely, the perceptual, central, and motor stage. In each stage, attention plays an important role. Specifically, a type of attention—perceptual attention—operates to detect and identify a sensory input. Following this, another class of attention—central attention—is involved in working memory encoding and response selection at the central stage. While perceptual attention and central attention are known to be separate, distinct processes, some researchers reported findings that loading central attention postponed the deployment of perceptual attention needed to perform a spatial configuration search. We tested whether a similar pattern of results would emerge when a different kind of search task is used. To do so, we had participants perform a visual-search task of searching for a feature conjunction target, taxing perceptual attention while they are engaged in central processes, such as working memory encoding and response selection. The results showed that perceptual processing of conjunction search stimuli could be carried out concurrently with central processes. These results suggest that the nature of the concurrent visual search process is a determinant responsible for the dynamic relationship between perceptual attention deployed for visual search and central attention needed for working memory encoding and response selection.

     

The role of psychosocial processes in explaining the gradient between socioeconomic status and health

The gradient between socioeconomic status (SES) and health is well established: Many measures of health show that health increases as SES increases. However, the mechanisms underlying this association are not well understood. Behavioral, cognitive, and affective tendencies that develop in response to the greater psychosocial stress encountered in low-SES environments may partially mediate the impact of SES on health. Although these tendencies might be helpful for coping in the short term, over time they may contribute to the development of allostatic load, which increases vulnerability to disease. Debate remains regarding the direction of causation between SES and health, the impact of income inequality, the interaction of SES with race-ethnicity and gender, and the effects of SES over the life course.     

Infants’ behavioral styles in joint attention situations and parents’ socio-economic status

In this study the eco-cultural model of parenting (Keller, H. (2007). Cultures of infancy. Mahwah, NJ: Erlbaum) was applied to the study of joint attention behavior of children from families with different socio-economic status (SES). It was hypothesized that infants’ early communication styles would differ with SES reflecting more independent or interdependent interactions with their caregivers. It was also hypothesized that infants would use the same types of behaviors whether they have declarative or imperative communication goals. The Early Social Communication Scales (ESCS, Mundy et al., 2003) was administered to 103 typically developing infants of 12 months (approximately half of them siblings of children with autism). A factor analysis, yielding four behavioral factors, namely pointing, eye contact, actions and following points, confirmed the hypothesis that infants use behaviors consistently across situations independent of their communicative intent. MANOVAs (comprising parental education and income) revealed that higher SES infants showed actions more frequently in the ESCS whereas lower SES infants followed experimenter's points more frequently. The results are discussed in the context of presumably differing socialization goals for infants and the divergent contribution of parental education and income that seem to have additive contribution to some factors (actions, following points) but divergent contributions to others (pointing, eye contact).     

The role of early fine and gross motor development on later motor and cognitive ability

The aim of this study was to determine whether information obtained from measures of motor performance taken from birth to 4 years of age predicted motor and cognitive performance of children once they reached school age. Participants included 33 children aged from 6 years to 11 years and 6 months who had been assessed at ages 4 months to 4 years using the ages and stages questionnaires (ASQ: [Squires, J. K., Potter, L., & Bricker, D. (1995). The ages and stages questionnaire users guide. Baltimore: Brookes]). These scores were used to obtain trajectory information consisting of the age of asymptote, maximum or minimum score, and the variance of ASQ scores. At school age, both motor and cognitive ability were assessed using the McCarron Assessment of Neuromuscular Development (MAND: [McCarron, L. (1997). McCarron assessment of neuromuscular development: Fine and gross motor abilities (revised ed.). Dallas, TX: Common Market Press.]), and the Wechsler Intelligence Scale for Children-Version IV (WISC-IV: [Wechsler, D. (2004). WISC-IV integrated technical and interpretive manual. San Antonio, Texas: Harcourt Assessment]). In contrast to previous research, results demonstrated that, although socio-economic status (SES) predicted fine motor performance and three of four cognitive domains at school age, gestational age was not a significant predictor of later development. This may have been due to the low-risk nature of the sample. After controlling for SES, fine motor trajectory information did not account for a significant proportion of the variance in school aged fine motor performance or cognitive performance. The ASQ gross motor trajectory set of predictors accounted for a significant proportion of the variance for cognitive performance once SES was controlled for. Further analysis showed a significant predictive relationship for gross motor trajectory information and the subtests of working memory and processing speed. These results provide evidence for detecting children at risk of developmental delays or disorders with a parent report questionnaire prior to school age. The findings also add to recent investigations into the relationship between early motor development and later cognitive function, and support the need for ongoing research into a potential etiological relationship.     

The Influence of Family Socio-economic Status on Learning Burnout in Adolescents: Mediating and Moderating Effects

According to family investment theory, a family’s socio-economic status can have a noteworthy impact on the academic performance and future lives of adolescents. However, the mechanism for this remains poorly understood. We examined the mediating and moderating effects of family emotional and cultural environment on the relations between family socio-economic status and learning burnout. Specifically, we investigated whether different family emotional environments have a moderating effect on the relationship between family socio-economic status and learning burnout and on the mediating effect of family cultural environment. A sample of 1181 junior and senior high school students completed multidimensional measures of family socioeconomic status, family emotional and cultural environment, and learning burnout. A regression analysis showed that socio-economic status significantly predicted learning burnout. The achievement, cultural, and recreational dimensions of family cultural environment were all mediators of this relationship. Moreover, cultural dimension was moderated by the family conflicts factor of family emotional environment.     

Priming divergent thinking promotes logical reasoning in 6- to 8-year olds: But more for high than low SES students

Divergent thinking is a component of creativity. In the following study, we argue that this form of thinking also underlies logical reasoning. A total of 205 early elementary school children in Grades 1 and 2, from high and moderately low SES environments, were given a short-term prime for divergent thinking and simple reasoning problems. Overall, receiving this prime significantly improved logical reasoning at both grade levels. High and low SES students had similar levels of working memory, inhibitory control, performance on the divergent thinking task, and levels of logical reasoning without the prime. However, also consistent with our predictions, only high SES students showed overall improved logical reasoning following the divergent thinking prime, with the SES difference concentrated in the younger students. These results suggest that environmental differences in openness to alternatives and divergent thinking might underlie developing SES differences in levels of logical thinking.     

Observable and subjective factors associated with attempted suicide in later life

This paper presents the results of a case-control study of the relationship of socio-economic status (SES), relational system, service availability, perceived quality of life, and affective balance to attempted suicide. Subjects were white suicide attempters (N(7)34) and controls (N = 118) age 50 and above. Discriminant function analysis indicated that lower SES, less help available in a crisis, belonging to fewer organizations, and greater availability of services from a community mental health center were associated with classification as an attempter. Also, more negative emotions, fewer positive emotions, and dissatisfaction with oneself and one's finances predicted membership in the attempter group. The role of these factors as risk factors for and consequences of a suicide attempt is discussed.     

Feeling frugal: socioeconomic status,acculturation, and cultural health beliefs among women of Mexican descent

Psychosocial and socioeconomic variables are often confounded. The authors combined quantitative with grounded theory analysis to investigate influences of acculturation, socioeconomic status (SES), and cultural health beliefs on Mexican-descent women's preventive health behaviors. In 5 focus group interviews sampling across levels of acculturation and SES, women expressing more traditional Mexican health beliefs about breast cancer screening were of lower SES and were less U.S. acculturated. However, SES and acculturation were uncorrelated with screening behaviors. Qualitative analysis generated hypotheses about joint influences of SES and traditional health beliefs; for example, low-SES women may learn frugal habits as part of their cultural traditions that influence their health care decision making, magnifying SES-imposed structural restrictions on health care access.     

Working memory updating and the development of rule-guided behavior

The transition from middle childhood into adolescence is marked by both increasing independence and also extensive change in the daily requirements of familial demands, social pressures, and academic achievement. To manage this increased complexity, children must develop the ability to use abstract rules that guide the choice of behavior across a range of circumstances. Here, we tested children through adults in a task that requires increasing levels of rule abstraction, while separately manipulating competition among alternatives in working memory. We found that age-related differences in rule-guided behavior can be explained in terms of improvement in rule abstraction, which we suggest involves a working memory updating mechanism. Furthermore, family socioeconomic status (SES) predicted change in rule-guided behavior, such that higher SES predicted better performance with development. We discuss these results within a working memory gating framework for abstract rule-guided behavior.     

Does affluence impoverish the experience of parenting?

Acquiring greater financial resources before having children seems like an intuitive strategy for people to enhance their well-being during parenthood. However, research suggests that affluence may activate an agentic orientation, propelling people to pursue personal goals and independence from others, creating a conflict with the communal nature of parenting. Coherence between one's goals and actions has been theorized to be essential for the experience of meaning in life. Thus, we hypothesized that affluence would be associated with a diminished sense of meaning during childcare. In Study 1, using the Day Reconstruction Method (DRM), we found that socioeconomic status (SES) was negatively related to the average sense of meaning parents reported across episodes of the day when they were taking care of their children. In Study 2, a reminder of wealth produced a parallel effect; when parents were exposed to a photograph of money, they reported a lower sense of meaning in life while spending time with their kids at a children's festival. These findings contribute to our understanding of the relationship between wealth and well-being by showing that affluence can compromise a central subjective benefit of parenting—a sense of meaning in life.     

Socioeconomic status, a forgotten variable in lateralization development

Socioeconomic status (SES), a variable combining income, education, and occupation, is correlated with a variety of social health outcomes including school dropout rates, early parenthood, delinquency, and mental illness. Several studies conducted in the 1970s and 1980s largely failed to report a relationship between SES and hemispheric asymmetry as measured by lateral differences in dichotic listening, tactile dot enumeration, and visual emotion and word recognition. However, none of the studies used asymmetry measures correcting for both ceiling and floor effects in accuracy, raising the question of whether lower and higher SES groups were comparable. Here the published data are reanalyzed using a laterality coefficient that corrects for such effects. The results are consistent across studies in revealing reduced lateralization in lower SES groups. Developmentally, this finding is consistent with either maturation delay or reduced functional specialization, or both. Suggestions are made for further research that include the use of behavioral asymmetry measures to screen tasks for structural and functional brain imaging.