Advertisement

Materials and Method

Chapter
  • 670 Downloads
  • 48 boys and 47 girls were systematically analysed in a stratified study at a choir school. A basic test of capability of reproducing tones and rhythms was made at the entrance to the choir.

  • Phonetograms were made with the standardization of the Union of European Phoniatricians.

  • Fundamental frequency was based on 2,000 cycles of electroglottographical measurements.

  • Hormone measures included serumtesterostone, dehydroepiandrosteron, delta-4, androsteron, oestradiol, oestrone, and oestrone sulphate plus sex hormone binding globulin. The five pubertal stages were measured.

  • The BMDP statistical programme based on logarithms was used for the one-way multivariate analysis and prospective aspects.

Keywords

Fundamental Frequency School Class Pubertal Stage Geometric Cross Section Pubic Hair Development 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Personalised recommendations