A non-parametric regression approach to repeated measures analysis in cancer experiments

The validity conditions for univariate or multivariate analyses of repeated measures are highly sensitive to the usual assumptions. In cancer experiments, the data are frequently heteroscedastic and strongly correlated with time, and standard analyses do not perform well. Alternative non-parametric approaches can contribute to an analysis of these longitudinal data. This paper describes a method for such situations, using the results from a comparative experiment in which tumour volume is evaluated over time. First, we apply the non-parametric approach proposed by Raz in constructing a randomization Ftest for comparing treatments. A local polynomial fit is conducted to estimate the growth curves and confidence intervals for each treatment. Finally, this technique is used to estimate the velocity of tumour growth.     

Influence of Communicative Openness on the Psychological Adjustment of Internationally Adopted Adolescents

This study evaluated the predictive relationship between the communicative openness and psychological adjustment of adopted adolescents, controlling for preplacement risk factors. One hundred Spanish international adoptees aged 12–18 took part in the study. Data were gathered with a structured interview, the Youth Self Report and the Adoption Communication Scale. A history of maltreatment prior to the adoption was associated with more closed communication between parents and children. Prenatal drug exposure shows a relationship with the presence of externalizing behaviors and attention problems in adolescents. Finally, a lower degree of communicative openness regarding the child's origins was significantly associated with the presence of all the adolescent behavioral problems studied.     

Professional Placement and Professional Recognition of Social Education Graduates in Spain: A 10‐year Balance

The aim of this article is to reflect on the level of professional recognition of social educators and social care workers in Spain. Our findings are based on data and conclusions obtained from recent studies of professional placement among social educators. One of those studies contains research carried out with graduates in social education from the University of Girona (Spain). We present the most important data on the employability of social education graduates and provide information on the professional standing of social educators in Spain.