Evaluating voice characteristics of first-year acting students in Israel: Factor analysis

Ofer Amir*, Adi Primov-Fever, Tami Kushnir, Osnat Kandelshine-Waldman, Michael Wolf

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Hypothesis: Acting students require diverse, high-quality, and high-intensity vocal performance from early stages of their training. Demanding vocal activities, before developing the appropriate vocal skills, put them in high risk for developing vocal problems. Study Design: A retrospective analysis of voice characteristics of first-year acting students using several voice evaluation tools. Methods: A total of 79 first-year acting students (55 women and 24 men) were assigned into two study groups: laryngeal findings (LFs) and no laryngeal findings, based on stroboscopic findings. Their voice characteristics were evaluated using acoustic analysis, aerodynamic examination, perceptual scales, and self-report questionnaires. Results obtained from each set of measures were examined using a factor analysis approach. Results: Significant differences between the two groups were found for a single fundamental frequency (F0)-Regularity factor; a single Grade, Roughness, Breathiness, Asthenia, Strain perceptual factor; and the three self-evaluation factors. Gender differences were found for two acoustic analysis factors, which were based on F0 and its derivatives, namely an aerodynamic factor that represents expiratory volume measurements and a single self-evaluation factor that represents the tendency to seek therapy. Conclusions: Approximately 50% of the first-year acting students had LFs. These students differed from their peers in the control group in a single acoustic analysis factor, as well as perceptual and self-report factors. No group differences, however, were found for the aerodynamic factors. Early laryngeal examination and voice evaluation of future professional voice users could provide a valuable individual baseline, to which later examinations could be compared, and assist in providing personally tailored treatment.

Original languageEnglish
Pages (from-to)68-77
Number of pages10
JournalJournal of Voice
Issue number1
StatePublished - Jan 2013


  • Acoustic analysis
  • Acting students
  • Aerodynamic
  • Factor analysis
  • Perceptual evaluation
  • Self-evaluation


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