Retraction Note: Unexpected events disrupt visuomotor working memory and increase guessing.

The authors are retracting this article (Finzi et al., 2018) because after publication they discovered a mistake in the behavioral analysis.

Unexpected events disrupt visuomotor working memory and increase guessing.

When an unexpected event, such as a car horn honking, occurs in daily life, it often disrupts our train of thought. In the lab, this effect was recently modeled with a task in which verbal working memory (WM) was disrupted by unexpected auditory events (Wessel et al. in Nature Communications, 7, 11195, 2016). Here we tested whether this effect extends to a different type of WM-namely, visuomotor. We found that unexpected auditory events similarly decremented visuomotor WM. Moreover, this effect persisted for many more trials than had previously been shown for verbal WM, and the effect occurred for two different types of unexpected auditory events. Furthermore, we found that unexpected events decremented WM by decreasing the quantity, but not necessarily the quality, of items stored. These results showed an impact of unexpected events on visuomotor WM that was statistically robust and endured across time. They also showed that the effect was based on an increase in guessing, consistent with a neuroscience-inspired theory that unexpected events "wipe out" WM by stopping the ongoing maintenance of the trace. This new task paradigm is an excellent vehicle for further explorations of distractibility.

Mini tomato genotypes resistant to the silverleaf whitefly and to two-spotted spider mites.

The mini tomato production has expanded, becoming an amazing alternative for enterprise. Despite all commercial potential, the cultivation has the occurrence of pests as main obstacle during the crop development. Nowadays, there are no researches that aimed obtaining genotypes with high acylsugar content, capable of providing a broad-spectrum resistance to pests. This study aimed the selection of mini tomato genotypes, with high acylsugar content, and checking the resistance level to the silverleaf whitefly [Bemisia tabaci (Gennadius)] and to the two-spotted spider mites (Tetranychus urticae Koch). Sixteen genotypes were evaluated, from which 12 were on the generation F2BC1, originated from the interespecific cross between Solanum pennellii versus Solanum lycopersicum L. and 4 were check treatments, being three of cultivated tomatos (cv. Santa Clara, UFU-02, and UFU-73) and the wild accession LA-716 (S. pennellii). The variables analyzed were acylsugar content, repellency to the silverleaf whitefly, repellence to the two-spotted spider mites, and density of glandular trichomes. The genotypes UFU-22-F2BC1#9 and UFU-73-F2BC1#11 have high acylsugar content and both are resistant to the pests that were evaluated. New studies must be conducted seeking for inbred lines, obtained from the selected genotypes, aiming to get commercial hybrids with high acylsugar content.

Depressive symptoms and suicidality in physically abused children.

Depressive symptoms and suicidality were assessed in 114 children 6-12 years old, of whom 41 had been physically abused, 38 neglected, and 35 neither abused nor neglected. The physically abused children manifested significantly higher levels of depressive symptomatology and suicidality than did the other two groups. Implications for research and clinical practice are discussed.

Attachment styles in maltreated children: a comparative study.

The study compares the emotional impact of maltreatment on the attachment styles in three groups of children aged 6-12 years: children of drug-user fathers (n = 76), physically abused children (n = 41), neglected children (n = 38); non-abused/non-neglected children (n = 35)--control group. The secure style characterized 52% of the children of drug-user fathers and the insecure style characterized the other 48% (anxious/ambivalent or avoidant); physically abused children were characterized mainly by the avoidant attachment style, and neglected children by the anxious/ambivalent style. The conclusion is that physically abused children are at risk of antisocial behavior and sustained suspicion towards others; neglected children are at risk of social withdrawal, social rejection and feelings of incompetence, and children of drug-user fathers may be at risk of behavioral problems and drug use in adolescence.

Evaluating the best interests of the child--a model of multidisciplinary teamwork.

This article describes the rationale, goals and procedure of a working model of multidisciplinary teamwork in conducting clinical evaluations of children and families and preparing expert testimony. Over the past five years, the team has evaluated over 60 cases involving child abuse and neglect, and questions of parental ability. Teamwork can reduce the distorting effects of personal biases, beliefs and countertransference issues. The contribution of integrating different theoretical viewpoints (theories of development, object relations, family systems, etc) is discussed. Recommendations include: (a) separation of roles of expert witness and therapist: (b) utilization of different diagnostic tools (psychodiagnostic tests, observations of interaction, joint clinical interviews, etc); (c) value of examining the feasibility of the recommendations with parents, care givers and community workers; and (d) strategies of dispute resolution and attainment of parental consent, utilizing the effects of potential judicial power and focusing on the best interests of the child.