Psychological Disorders

Research and results

Research and results

In addition to the positive results achieved with our clients and which have made our reputation, our method has also proven its effectiveness scientifically. The research continues to grow as the areas of application of the method are extended. Indeed, the acoustic sensory message plays a key role in the development of the individual and as a result connects to a broad range of disorders. The scientific partners with whom we work include several public bodies (ministries, research institutes, hospitals) as well as universities, specialized associations and foundations. Their involvement ensures the objectivity and reliability of the results presented for you in a non-exhaustive overview in the following tables.
For more information on the research and results, see

Auditory processing study TAPS subtests
(test of auditory Perceptual Skills)
Pre/Post (%)
Ross-Swain (The Swain Center) reviewed the pre / post treatment testing results of 41 selected clients that had Auditory Processing Problems which can affect listening comprehension.

After sessions of Tomatis® listening program, the results show a strong increase of ability to use memory to better listening and communicate.
N 41
Auditory Processing Overall 8.4/58.3
Auditory Discrimination 14.2/68.1
Auditory Memory, digits 9.7/46.0
Auditory Memory, digits reversed 19.1/37.4
Auditory Memory, words 12.2/48.5
Auditory Memory, sentences 16.4/53.4
Auditory Processing 23.2/56.6
Following Directions 31.3 / 66.5
Du Plessis Study Pre/ Post Anxiety Scores
Du Plessis (University of Potchefstroom, South Africa) studied 10 anxious university students who received the Tomatis® listening program, 9 who received psychotherapy program and 10 assigned to the control group.
The Tomatis® group showed significant reductions in anxiety, while the results were mixed for the psychotherapy group and no change in anxiety was found in the control group.
Another Du Plessis' study showed that Tomatis group had maintained its reduced level of anxiety after 14,3 months and that the level of self-actualization had increased significantly. No change was detected in the control group.
  Tomatis Psychotherapy Control
N (number) 10 9 10
CAS (Children's Anxiety Scale) 9.6/7.6 11.0/11.3 8.4/7.7
STAIC Trait 42.8/32.9 41.2/37.1 37.2/37.6
STAIC State (State-Trait Anxiety Inventory for Children) 32.8/27.6 30.7/28.1 31.3/30.0

Spaggiari report   N Success %
Dr Spaggiara, psychiatrist, evaluated the impact of Tomatis listening program on 409 people with psychological disorders. The highest success rate was scored in treating Anxiety Disorders, where the success rate approached the level of success in treating learning difficulties (78%). Anxieties with Panic 45 72
Psychosomatic Anxieties 71 73
Bipolar/ Manic/ Depressions/ Cyclotomia 97 58

D'Orthy Study Pre/ Post (control group) Pre/ Post (Tomatis group)
D'Orthy (Hospital Foch, near Paris), compared anxiety in a control group of 683 expectant women who received only the traditional preparation technique and 53 expectant women who received a shortened version of The Tomatis® listening program.
The results showed a decrease in anxiety among the Tomatis mother, whereas in the control group anxiety increase slightly.
N 683 53
Hamilton test (self administration test measuring anxiety) 4.4/4.7 5.7/4.0
Gilmor Meta-Analysis Field N Average
progression (%)
Gilmor’s meta-analysis is based on a study of 225 children with learning and communication difficulties.
This analysis shows that the Tomatis® listening sessions have a significant impact in the following areas: language,
cognitive and psychomotor development, social and personal behavior.
Linguistics 225 41
Psychomotor 153 32
Personal and social
225 31
Cognitive 152 30
Hearing 77 4

Etude Wilson (Hôpital universitaire de North Shore - Université de Cornell, New-York) Test TOMATIS / Control
(% Change)
Wilson studied 26 children suffering from a language disorder. Eighteen (18) children received Tomatis®
listening sessions and 8 were assigned to the control

The results show progress for the Tomatis® group in the following areas: communication, openness of hearing and ability to reproduce sound.
N 18 / 8
WIG Communication Score (test designed for the study)  
Parent evaluation 22 / 12
Teacher evaluation 34 / 27
Language Domain (non-specified
Sound reproduction 86 / -9,s
Openness of hearing 38 / 3

Study 1 and 2 Brickwall House Institute
(East Sussex, England)
Test TOMATIS / Control
(% Change)
Brickwall studied 47 dyslexic children suffering from a delay in reading of 4/5 years. Twenty-four (24) of these children underwent Tomatis® listening sessions. The remaining 23 children were assigned to the control group.

The results show a significant difference in favor of the
Tomatis® group, in reading ability and expression.
N 12 / 12 or 24 /24
depending on the test
Receptive Vocabulary (BPVS) 19 / 4,s
WRAT Reading (raw scores)
- Lecture
51,s / 19, s
WRAT Spelling (Raw scores)
- expression
53 / 20,s
Verbal Fluency (raw scores) 52 / 39,s
Neal Reading (accuracy) 21 / 11
Neale Reading (comprehension) 19 / 7

Study of the Nordiska Tomatis® Centre
Domaine Pre / Post
( % Change )
The Tomatis® centre of Sweden evaluated the impact of Tomatis® listening sessions on 56 people.

Significant progress was recorded in terms of attention and energy as well as on motor performance and adaptability.
N = 56  
Attention 20
Motor ability 12
Expression 10
Energy 11
Behaviorand adaptability 12