[Verification of normative values for the Swiss version of the Freiburg speech intelligibility test.]

BACKGROUND AND OBJECTIVE: In the Swiss version of the Freiburg speech intelligibility test five test words from the original German recording which are rarely used in Switzerland have been exchanged. Furthermore, differences in the transfer functions between headphone and loudspeaker presentation are not taken into account during calibration. New settings for the levels of the individual test words in the recommended recording and small changes in calibration procedures led us to make a verification of the currently used normative values.PATIENTS AND METHODS: Speech intelligibility was measured in 20 subjects with normal hearing using monosyllabic words and numbers via headphones and loudspeakers.RESULTS: On average, 50% speech intelligibility was reached at levels which were 7.5 dB lower under free-field conditions than for headphone presentation. The average difference between numbers and monosyllabic words was found to be 9.6 dB, which is considerably lower than the 14 dB of the current normative curves.CONCLUSIONS: There is a good agreement between our measurements and the normative values for tests using monosyllabic words and headphones, but not for numbers or free-field measurements.

Social Work as Laboratory for Normative Professionalisation

In most Western countries, the professional status of social workers is instable and insecure. Of course, most Western countries are themselves instable, ridden with feelings of insecurity and in search of reassurance and promises of control. But social work hardly lends itself as a projection screen for visions of professional control and efficiency in the face of insecurity. On the contrary: within the present cultural and political climate, social work connotes primarily with unpopular social problems, with people unable to cope adequately with the competitiveness and the rate of change of post-industrial societies, that is to say: it connotes more with dependency and helplessness then with autonomy and control. Moreover, whereas public discourse in most Western country is dominated by a neo-liberal perspective and the intricate network of economic, managerial, consumerist and military metaphors connected with it, social work still carries with it a legacy of 'progressive politics' increasingly labeled as outdated and inadequate. Although the values of solidarity and social justice connected with this 'progressive heritage' certainly have not faded away completely, the loudest and most popular voices on the level of public discourse keep underscoring the necessity to adapt to the 'realities' of present-day postindustrial societies and their dependence on economic growth, technological innovation and the dynamics of an ever more competitive world-market. This 'unavoidable' adaptation involves both the 'modernization' and progressive diminishment of 'costly' welfare-state arrangements and a radical reorientation of social work as a profession. Instead of furthering the dependency of clients in the name of solidarity, social workers should stimulate them to face their own responsibilities and help them to function more adequately in a world where individual autonomy and economic progress are dominant values. This shift has far-reaching consequences for the organization of the work itself. Efficiency and transparency are the new code words, professional autonomy is dramatically limited and interventions of social workers are increasingly bound to 'objective' standards of success and cost-effectiveness.

Normative MR Cervical Spinal Canal Dimensions

Purpose To provide normal values of the cervical spinal canal and spinal cord dimensions in several planes with respect to spinal level, age, sex, and body height. Materials and Methods This study was approved by the institutional review board; all individuals provided signed informed consent. In a prospective multicenter study, two blinded raters independently examined cervical spine magnetic resonance (MR) images of 140 healthy volunteers who were white. The midsagittal diameters and areas of spinal canal and spinal cord, respectively, were measured at the midvertebral levels of C1, C3, and C6. A multivariate general linear model described the influence of sex, body height, age, and spinal level on the measured values. Results There were differences for sex, spinal level, interaction between sex and level, and body height, while age had significant yet limited influence. Normative ranges for the sagittal diameters and areas of spinal canal and spinal cord were defined at C1, C3, and C6 levels for men and women. In addition to a calculation of normative ranges for a specific sex, spinal level, age, and body height data, data for three different height subgroups at 45 years of age were extracted. These results show a range of the spinal canal dimensions at C1 (from 10.7 to 19.7 mm), C3 (from 9.4 to 17.2 mm), and C6 (from 9.2 to 16.8 mm) levels. Conclusion : The dimensions of the cervical spinal canal and cord in healthy individuals are associated with spinal level, sex, age, and height. © RSNA, 2013 Online supplemental material is available for this article.