A sample of 62 asthmatic children was divided into two subgroups on the basis of scores on the Allergic Potential Scale (APS)-an index of somatic or constitutional predisposition to allergy. The subgroups were compared, together with the associated mothers, on a variety of independent psychological tests and standardized interactional situations. The hypothesis that psychopathological factors would be observed significantly more often in the children identified by low APS scores, and their mothers, was supported. It was shown that the two groups were comparable with respect to the degree of severity of asthma and socioeconomic level. The results attest to the fruitfulness of seeking subgroups and suggest that a differentiated approach to asthma reconciles some findings in the literature which otherwise appear to be contradictory. The APS may prove useful, not only in other research, but as a guide for differential treatment of asthmatic children.I H E SUPPOSITION of homogeneity within subject samples is pervasive in psychology. It influences methodological decisions and it underlies many statistical techniques on which the researcher is dependent in the analysis of his data.

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Background Injury results in a limitation of activity participation. Treatment of injury is designed to return the patient to as a high level of activity as desired. Objective To design an activity measure that allows clinicians to: Determine patients' pre-injury preferred activities, level of participation, intensity, and frequency of participation. Determine patients' recovery level of participation, intensity, and frequency of participation in the pre-injury preferred activities. Determine if the patients' lack of full return to activity is due to the injury or to other reasons external to the injury. Setting Orthopaedic community based clinics. Participants Patients with musculoskeletal complaints. Intervention Treatment of injury. Main outcome measure The composite of the patients' current activity participation, level of limitation, and reason for limitation. Results Favourite/Most Important Activity Q1 What is this activity? Prior to Your Injury Q2 Prior to your injury: A How long would you normally participate in this activity? |__|__| Hours per Time B On average how many days a week would you participate in this activity? |__| Days per Week Current Time Q3 Do you still engage in this sport or activity? 1 □ Yes 2 □ No Q4 How much is your ability to participate in this activity limited by your injury? 0 1 2 3 4 5 6 7 8 9 10 None Completely If None (0) (Go to Q6 – top of next column) If Limited (1–10) continue with Q5 Q5 What is the primary reason you are limited in this sport or activity anymore? 1 □ Your Injury 2 □ Other Reason – Describe: Conclusion This measure allows clinicians to track return to activity over time and understand if the decision to return to pre-injury activity is due to the injury or life events.

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