Young-of-the-year (age-0) brook trout Salvelinus fontinalis that were spawned in a lake were observed migrating into and inhabiting small (<2-m-wide) inlet streams. We estimated that up to 81% of the entire age-0 population in the lake system inhabited the streams by midsummer. Some age-0 fish overwintered in the streams and remained there during their second summer. Such behavior suggested fitness advantages were gained by stream residence. The inhabited streams had accessible, cold, and stable habitats that existed because the streams occurred in forested catchments where groundwater dominated base flows. This identification of these small streams as habitat for young brook trout and the importance of catchment hydrology for sustaining these habitats indicated a need to review habitat protection guidelines for lake-dwelling populations.

Behavior problems of 703 children seen in a clinical setting were examined for interactions between and effects of family type (i.e., parental marital status) and age and sex of child. Significant differences were found based on family type, with children of separated, divorced, and remarried parents having more problems. Expected interactions between marital status and age and sex of child were not obtained, although results support prior research with regard to the effects of age and sex.

This article examines the experience of families who contacted a child and family community mental health treatment center, but then did not follow through to receive even one session of diagnosis or treatment at the agency. The paper reports the base rate for this behavior in a large (N = 2,358) sample of cases who either only made inquiry or who received treatment at the agency. The inquiry group, or “teasers,” tended to have children who were older than client groups, to have relatively more behavioral and fewer personality problems, to have demonstrated problems earlier than client groups, and to have parents who were slightly older. A follow‐up study was conducted with 100 inquiry and 100 client cases. The relative efficacy of telephone and written questionnaire methodologies are compared, demonstrating that the telephone approach was more effective. Client‐group children were reported to be only moderately better off at the time of follow‐up than the inquiry group, but conclusions about the effects of treatment are limited by the finding that many members of the inquiry group had sought treatment elsewhere after their brief contact with the agency. Implications of this study for community mental health administration and for future research in this area are discussed.

Data collected over 7 consecutive years were used to examine the population dynamics of the exploited brook trout Salvelinus fontinalis of Meach Lake in central Ontario. Numbers of age‐1 and older trout averaged 975 among years. The largest trout were 490 mm long and weighed 1,807 g. Few trout lived beyond age 4. Annual mortality rates varied among age‐classes and between sexes; average total instantaneous mortality was 0.95 and average total and fishing mortalities were 78% and 44%, respectively. Exploitation was greatest for age‐2 and age‐3 brook trout of both sexes. Catchability was uncorrelated with abundance. There was evidence of density‐dependent growth at age‐2 or age‐3 but no indication of density‐dependent mortality. A “hockey stick” model appeared to best describe the stock–recruitment relationship. Abundance of potential competitors was not correlated with brook trout size, although abundance of white suckers Catostomus commersoni was correlated with numbers of age‐2 male brook trout. We conclude that total mortality rates are naturally very high and existing levels of harvests in this lake may not be increasing total mortality. To ensure the sustainability of brook trout fisheries, lake‐dwelling populations should be managed to maintain total mortality rates below those observed in this study.

The Minnesota Multiphasic Personality Inventory--Second Edition includes a new validity scale, the VRIN scale, intended to detect random responding. High scores are viewed as casting suspicion on the validity of the profile. For the present study, the authors evaluated some of the complexities of the VRIN scale including its interaction with the F scale. In particular, we tested two hypotheses. First is that among psychotically disturbed test takers, some inconsistent responding is an integral and expected mode of responding to a self-report measure. That is, in an inpatient psychiatric population increased confused responding (high VRIN score) is related in predictable ways to increased endorsement of psychotic scales and two-point codes and to increased psychotic diagnoses. The second hypothesis is a corollary--that the absence of inconsistency (low VRIN) in a protocol indicating acute distress (high F) may indicate that a respondent is being too consistent in presenting self as having severe difficulties. In this case, the rest of the protocol may be an exaggerated description of the clinical presentation. A sample of 521 psychiatric inpatients was used to evaluate these hypotheses. Some support for both hypotheses is reported. Further studies are recommended to evaluate the hypotheses.