Mindfulness,physical impairment and psychological well-being in people with amyotrophic lateral sclerosis

Objective: Mindfulness is the process of actively making new distinctions, rather than relying on habitual or automatic categorisations from the past. Mindfulness has been positively associated with physical well-being, better recovery rates from disease or infections, pain reduction and overall quality of life (QOL). Amyotrophic lateral sclerosis (ALS) is a rare, progressive and fatal neurodegenerative disease, clinically characterised by progressively increasing weakness leading to death, usually within five years. There is presently no cure for ALS, and it is considered one of the most genetically and biologically driven illnesses. Thus far, the aims of psychological studies on ALS have focused on understanding patient – and, to a lesser extent, caregiver – QOL and psychological well-being. No previous study has investigated the influence of psychological factors on ALS.

Methods: A sample of 197 subjects with ALS were recruited and assessed online twice, with a duration of four months between the two assessments. Assessments included measurements of trait mindfulness, physical impairment, QOL, anxiety and depression. The influence of mindfulness as predictor of changes in physical impairments was evaluated with a mixed-effects model.

Results: Mindfulness positively influenced the change of physical symptoms. Subjects with higher mindfulness experienced a slower progression of the disease after four months. Moreover, mindfulness at first assessment predicted higher QOL and psychological well-being.

Conclusions: The available data indicate that a psychological construct – mindfulness – can attenuate the progress of a disease that is believed to be almost solely biologically driven. The potential implications of these results extend well beyond ALS.     

Response to commentaries on discussion paper Gene–environment interdependence

There is a high measure of agreement on the key issues concerning gene–environment interdependence. Contrary to arguments on the need for direct exact replication of findings, it is suggested that “robust” replication using the same constructs is needed. RCTs have an important role for testing for environmental mediation but cannot be used for environmental risks in childhood that show G×E in relation to adult outcomes. Instead, greater use needs to be made of natural experiments. Experimental methods are needed to study biological mediating mechanisms and these should include both animal models and human brain imaging studies. In addition to further research on G×E, further studies of gene–environment correlations are required. Many challenges remain but the future for gene–environment interdependence is bright.     

Infant-holding bias variations in mother–child relationships: A longitudinal study

This longitudinal study examined the associations between maternal depressive symptoms and infant holding bias in a sample of N = 43 women during three prospective sessions: during pregnancy, two months after childbirth, and when the child was 19 months of age. The majority of mothers (65.8% on average) held their children on the left side of their body at all three sessions; approximately 30% demonstrated a change in their preference, in particular between the pre- and first post-natal session. Examination of reciprocal associations between holding bias and depression revealed that prior and concurrent depression did not predict changes in holding-side biases, whereas women's holding preferences when their infant was two months old predicted change in pre- to postnatal depressive symptoms; women favouring a right-sided holding bias were significantly more likely to report increased depressive symptoms across the perinatal period, whereas a left-sided holding bias was associated with decreased depressive symptomatology.     

Pubertal timing and self-esteem in adolescents: The mediating role of body-image and social relations

The aim of this study was to investigate the relationship between pubertal timing and self-esteem, and the mediating role of body-image, parent–adolescent interaction and peer support within this relationship. The sample comprised 526 adolescents, aged 10–13. Two measures of pubertal timing were used: perceived pubertal timing and pubertal timing based on Pubertal Development Scale (PDS). There were no differences in self-esteem between groups of adolescents with different pubertal timing based on PDS. Perceived early maturation was related to lower self-esteem in girls, and higher self-esteem in boys. We found evidence that the relationship between girls' perceived pubertal timing and self-esteem is mediated through the following variables: closeness to mother and father, and conflict with mother. In boys, mediators of the relationship between perceived pubertal timing and self-esteem are body-image and excessive control by mother. The results imply that interventions aiming to improve early maturing girls' self-esteem should focus on the interaction with their parents.     

Young children's ability to solve spatial problems involving a choice

When do young children become able to make an adequate choice between two alternatives based on spatial information? Children of 20, 30, and 40 months of age were either presented with two objects with different cross-sections and one aperture, or one object and two different apertures. In each trial there was one object – aperture match and the task was to find that match and insert the object. All the children understood the task and tried to solve the problems but the 20-month-olds performed randomly and not even the 40-month-olds chose all the correct correspondences consistently. The results also showed that it is easier to choose between apertures than objects. This contrasts with the ability to solve the insertion problem once the choice was made. When choosing the correct object or aperture, the 40-month-olds inserted the triangle successfully in 85% of the cases. The boys and girls were equally good at solving the task, but the boys did it faster. The results show that making a choice adds significantly to the difficulty of solving spatial problems. It requires systematic examination of the objects and apertures involved, a working memory that can handle at least three items at a time, and an ability to inhibit an incorrect choice. Such executive functions are typically found in older preschool children but the present task shows that with an appropriate setup their development can be traced from a much earlier age.     

Parental behaviour and children's creation of imaginary companions: A longitudinal study

This longitudinal study examined whether parenting quality, parental behaviours and children's temperament at 6 months of age predicted children's creations of imaginary companions (ICs) at 44 months of age. At six months, parenting quality and parental behaviours were measured using the Parent-Child Early Relational Assessment, and the frequency of mental-state references made during mother–infant interactions was recorded. Temperament was assessed using the Revised Infant Temperament Questionnaire. Parents then completed questionnaires assessing whether their children had ICs at 44 months of age. The results revealed that only the approach characteristic of temperament marginally predicted children's IC status. Results of the parental measures showed that parents of children with ICs were more likely to attribute mental states to their child and to refrain from intruding in their child's behaviours than parents of children without ICs. The results indicated that parental behaviours are important for children's creation of ICs.     

Children's appraisal of their relationship with the teacher: Preliminary evidence for construct validity

Teacher–child relationships are increasingly considered as contexts for children's development. While teacher reports are mostly used to study the developmental consequences of the three attachment-based dimensions of closeness, conflict and dependency, children's perceptions are important too. This study evaluated the construct validity of the newly developed Child Appraisal of Relationship with Teacher Scale (CARTS). To this end, data from a special education sample of children with emotional and behavioural disorders (N = 82; M_age = 8.75) and from a general education sample (N = 145; M_age = 8.15) were used. Results supported the reliability and construct validity of the CARTS scales and showed that children's relationship perceptions as assessed with the CARTS were uniquely associated with their feelings about their teacher as measured with the Feelings About School. In addition, child-perceived closeness and conflict converged in expected directions with teacher-perceived closeness and especially conflict in the relationship, as measured with a questionnaire and a diary.     

Who benefits the most from a gratitude intervention in children and adolescents? Examining positive affect as a moderator

This research addresses the notion that the compatibility of skills and task demands involved in an activity elicits flow-experiences that render the activity intrinsically rewarding. We applied two experimental settings designed to test the causal impact of a skills–demands compatibility on the emergence of flow and intrinsic motivation: a playful computer game (Experiment 1) and a knowledge task (Experiment 2). Results support the balance hypothesis and indicate that compatibility of skills and task demands results in a flow-experience, irrespective of the type of activity. This demonstrates the generalizability of flow-experiences across two qualitatively different types of activities. Going beyond prior research, the results of Experiment 2 reveal that flow-experiences foster the willingness to reengage in the activity in a free choice setting, which represents a behavioral measure of intrinsic motivation.     

Sequential or parallel decomposed processing of two-digit numbers? Evidence from eye-tracking

While reaction time data have shown that decomposed processing of two-digit numbers occurs, there is little evidence about how decomposed processing functions. Poltrock and Schwartz (1984) argued that multi-digit numbers are compared in a sequential digit-by-digit fashion starting at the leftmost digit pair. In contrast, Nuerk and Willmes (2005) favoured parallel processing of the digits constituting a number. These models (i.e., sequential decomposition, parallel decomposition) make different predictions regarding the fixation pattern in a two-digit number magnitude comparison task and can therefore be differentiated by eye fixation data. We tested these models by evaluating participants' eye fixation behaviour while selecting the larger of two numbers. The stimulus set consisted of within-decade comparisons (e.g., 53_57) and between-decade comparisons (e.g., 42_57). The between-decade comparisons were further divided into compatible and incompatible trials (cf. Nuerk, Weger, & Willmes, 2001) and trials with different decade and unit distances. The observed fixation pattern implies that the comparison of two-digit numbers is not executed by sequentially comparing decade and unit digits as proposed by Poltrock and Schwartz (1984) but rather in a decomposed but parallel fashion. Moreover, the present fixation data provide first evidence that digit processing in multi-digit numbers is not a pure bottom-up effect, but is also influenced by top-down factors. Finally, implications for multi-digit number processing beyond the range of two-digit numbers are discussed.     

Flanker and Simon effects interact at the response selection stage

The present study aimed at investigating the processing stage underlying stimulus–stimulus (S–S) congruency effects by examining the relation of a particular type of congruency effect (i.e., the flanker effect) with a stimulus–response (S–R) spatial correspondence effect (i.e., the Simon effect). Experiment 1 used a unilateral flanker task in which the flanker also acted as a Simon-like accessory stimulus. Results showed a significant S–S Congruency × S–R Correspondence interaction: An advantage for flanker–response spatially corresponding trials was observed in target–flanker congruent conditions, whereas, in incongruent conditions, there was a noncorresponding trials' advantage. The analysis of the temporal trend of the correspondence effects ruled out a temporal-overlap account for the observed interaction. Moreover, results of Experiment 2, in which the flanker did not belong to the target set, demonstrated that this interaction cannot be attributed to perceptual grouping of the target–flanker pairs and referential coding of the target with respect to the flanker in the congruent and incongruent conditions, respectively. Taken together, these findings are consistent with a response selection account of congruency effects: Both the position and the task-related attribute of the flanker would activate the associated responses. In noncorresponding-congruent trials and corresponding-incongruent trials, this would cause a conflict at the response selection stage.