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Nasometer II Normative Data

The MacKay-Kummer SNAP TEST- R

Simplified Nasometric Assessment Procedures

Revised 2005

 

Name:                                             Date:

Age:                                                Examiner:

Syllable Repetition/Prolonged Sounds Subtest

Instructions: Repeat or prolong until the screen is full.

Oral + /a/ Syllables

Norms

SD

Score (Threshold: ≥15)

pa, pa, pa...

6

3

 

ta, ta, ta...

7

4

 

ka, ka, ka...

7

4

 

sa, sa, sa...

7

5

 

Sa, Sa, Sa...

7

4

 

 

 

 

 

Oral + /i/ Syllables

Norms

SD

Score (Threshold: ≥35)

pi, pi, pi...

17

7

 

ti, ti, ti...

17

7

 

ki, ki, ki...

18

8

 

si, si, si...

17

8

 

Si, Si, Si...

16

8

 

 

 

 

 

Nasal+ /a/ Syllables

Norms

SD

Score (Threshold: ≤40)

ma, ma, ma...

53

13

 

na, na, na...

53

11

 

 

 

 

 

Nasal+ /i/ Syllables

Norms

SD

Score (Threshold: ≤60)

mi, mi, mi...

72

13

 

ni, ni, ni...

74

11

 

 

 

 

 

Prolonged Sounds

Norms

SD

Score (Threshold: +/-2 SDs)

Prolonged /a/

6

3

 

Prolonged /i/

19

9

 

Prolonged /s/

0

0

 

Prolonged /m/

93

3

 

Name: _____________________________________________________________________                                                                

Picture-Cued Subtest

Instructions: Produce a sentence with the carrier phrase and picture. Do each twice.

Oral Passages

Norms

SD

Score (Threshold: ≥22)

Bilabial Plosives

11

5

 

Lingual-Alveolar Plosives

11

5

 

Velar Plosives

13

6

 

Sibilant Fricatives

12

5

 

Nasal Passage

Norm

SD

Score (Threshold: ≤45)

Nasals

54

9

 

 Reading Passages Subtest

Instructions: Read or repeat each passage.

Passages (Reading)

Norms

SD

Score (Threshold: ≥25)

Bilabial Plosives (w/ nasals)

16

5

 

Passages (Reading)

Norms

SD

Score (Threshold: ≥20)

Sibilant Fricatives (w/o nasals)

10

4

 

 

Notes:_____________________________________________________________________________________

_______________________________________________________________________________________________

_______________________________________________________________________________________________

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Important: The threshold value for each test is an approximation of the beginning of a
borderline range of abnormal resonance. These values were estimated based on standard deviations
(about two higher for orals, about one lower for nasals) and clinical experience. It should be noted
that a small number of normal speakers will score outside two standard deviations of the mean for
both orals and nasals. Therefore, the suggested threshold values should be used as general
guidelines and not as absolute markers between normal and abnormal resonance. The scores
on nasometry should always be used as a means to support clinical judgment, but never to replace it.

 

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