Body condition and pregnancy in northern Yellowstone elk: evidence for predation risk effects?

S. Creel et al. reported a negative correlation between fecal progesterone concentrations and elk:wolf ratios in greater Yellowstone elk (Cervus elaphus) herds and interpreted this correlation as evidence that pregnancy rates of elk decreased substantially in the presence of wolves (Canis lupus).

Proactive and reactive aggression in referred children and adolescents.

Investigating different types of aggression is important to facilitate a better understanding of excessive maladaptive aggression in referred youth. Using regression analysis, the authors investigated demographic, historical, diagnostic, and treatment correlates of proactive aggression and reactive aggression in a heterogeneous population (N = 323) of psychiatrically referred youths. Ratings of proactive and reactive aggression significantly correlated with more established measures of aggression.

What does getting better mean? Child improvement and measure of outcome in residential treatment.

A single-sample, within-subject descriptive study was completed to ascertain individual subject characteristics associated with outcome for 87 youths discharged from a residential treatment facility. Two different methods of assessing outcome were also compared. Variables assessing a history of abuse and internalizing psychopathology at admission to residential care were associated with outcome.