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. Author manuscript; available in PMC: 2024 Mar 1.
Published in final edited form as: Perspect ASHA Spec Interest Groups. 2022 Jul 22;7(4):1275–1283. doi: 10.1044/2022_persp-21-00332

Table 1.

Description of the 3-point rating scale (Maas et al., 2012; Strand et al., 2006).

Rating Definition Criteria
2 Accurate productions
  • These productions have NO error

1 Close approximations
  • These productions have ONLY ONE of the following errors
    • Mild vowel distortion: sounds like a bad example of the target vowel, or between the target and another vowel, but is NOT a vowel substitution
    • Mild consonant error: has a change in ONLY ONE feature that affects the place, manner, or voicing of the consonant
    • Excessive lengthening: a consonant or a vowel is lengthened excessively
    • Prosodic error in bisyllabic words: inaccurate stress, equal stress, or word segmentation in bisyllabic words
0 Inaccurate productions
  • These productions have any error that do not qualify for a 1 and/ or have multiple errors. This includes but is not limited to:
    • Vowel substitution: sounds like a good exemplar of a different vowel
    • Consonant Substitution: more than one feature is different from target
    • Omission of sound/syllable
    • Addition of sound/syllable
    • Multiple errors: More than one sound error and/ or sound error plus prosodic error