Block-structured correlation matrices are correlation matrices in which the p variables are subdivided into homogeneous groups, with equal correlations for variables within each group, and equal correlations between any given pair of variables from different groups. Block-structured correlation matrices arise as approximations for certain data sets' true correlation matrices. A block structure in a correlation matrix entails a certain number of properties regarding its eigendecomposition and, therefore, a principal component analysis of the underlying data. This paper explores these properties, both from an algebraic and a geometric perspective, and discusses their robustness. Suggestions are also made regarding the choice of variables to be subjected to a principal component analysis, when in the presence of (approximately) block-structured variables.block-structured correlation matrices, eigendecomposition, principal component analysis, within-group eigenpairs, between-group eigenpairs,

Purpose – The purpose of this paper is to research factors like task-orientation and collectivism and to examine the relationship between them and goal-setting as research construct. This research investigates the phenomena of team goal-setting in a selected sports organisation. Therefore 49 players from three Portuguese elite male handball team were selected for the study. Design/methodology/approach – Three well-known questionnaires were employed to determine the relationships between the above factors in a case setting. Task- and ego-orientation in Sport Questionnaire, the Jackson Psychological Collectivism Measure and the Goal-setting in Sport Questionnaire. Findings – The results reveal that the team and players are task-oriented, collectivist and possessing professional and personal goal habits. The correlations between questionnaire outcomes indicate that, when the team wants to set goals, it should consider the players’ orientation and the team’s collectivism. Thus team goal-setting is more than only goal-setting, because of the need for task-orientation and collectivism. Research limitations/implications – The research was conducted using three teams in a specific sports and thus cannot be generalised to the general sports environment. Yet, certainly the strength of the findings indicate that the results and conclusions may be used in a wider sports or business setting. Practical implications – This research paper should provide managers and coaches with insight into the complexity of team goal-setting. It also should provide insight into the chosen process related to human resources. Originality/value – The paper adds and demonstrates to the literature on team goal-setting the importance of task-orientation and collectivism as goal-setting mediators.

Objective: Limited research has focussed on the development of traumatic stress symptoms following an amputation due to a chronic disease such as Diabetes. This study analysed whether coping strategies, anxiety and depression symptoms, sociodemographic and clinical variables were related to traumatic stress symptoms in a sample of patients who had undergone a lower limb amputation. Design: A longitudinal design with three assessments, one month (T1), six (T2) and ten months after an amputation surgery (T3), included 144 patients. Main outcome measures: IES-R, WOC and HADS. Results: Traumatic stress symptoms were prevalent at T1 (M ¼ 15.65, SD ¼ 15.40) and probable PTSD was observed in 13.9% patients. Presence of pain, high level of anxiety symptoms and emotion-focused strategies contributed to traumatic stress symptoms, and the period between T1 and T2, was critical. Six to ten months (K ¼ 0.871, F (2,84) =6.245, p=. 003), after surgery, symptoms tended to decrease 0.122 units (SE ¼ 0.032, p ¼ 0.002) per assessment. Conclusions: Findings raise awareness to the need of urgent identification of traumatic stress symptoms in medically ill patients who underwent a lower limb amputation, given the prevalence of traumatic stress symptoms right after surgery and in the following six months.

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