Children’s Auditory Performance Scale

1. Abstract

The Children’s Auditory Performance Scale (CHAPS; Smoski et al., 1998; Dutch adaptation: Wiltingh et al., 2005) is a standardized parent- and teacher-report behavioral rating questionnaire designed to systematically evaluate listening behaviors, auditory function, and functional listening difficulties in children aged seven years and older. Developed as a systematic screening and observational assessment instrument, the CHAPS identifies pediatric populations experiencing peripheral hearing loss, minimal sensorineural deficits, fluctuating conductive impairments, or suspected Auditory Processing Disorder (APD). The scale comprises 36 items distributed across six ecologically grounded listening condition subscales: Noise (7 items), Quiet (7 items), Ideal (3 items), Multiple Inputs (3 items), Auditory Memory/Sequencing (8 items), and Auditory Attention Span (8 items). Each item requires respondents to evaluate the child’s listening proficiency relative to typically developing peers of identical chronological age and gender using a comparative 7-point bipolar response scale ranging from +1 (Less difficulty) through 0 (Same amount of difficulty) to -5 (Cannot function at all). Psychometric investigations demonstrate robust internal consistency (total scale Cronbach’s α ranging between .94 and .97; subscale α coefficients between .72 and .92) and moderate-to-high test-retest reliability over clinical monitoring intervals (r = .78 to .88). Structural equation modeling and exploratory factor analyses substantiate a multidimensional construct incorporating acoustic degradation, divided attention, sequential recall, and sustained vigilance. Clinically, negative total or condition average scores signal functional listening risk, providing empirical guidance for audiological intervention, acoustic classroom accommodations, and targeted auditory training.

2. Keywords

Children’s Auditory Performance Scale, CHAPS, Auditory Processing Disorder, pediatric audiology, auditory attention, speech-in-noise perception, psychoacoustics, listening behavior, behavioral screening, psychometrics

3. Authors

The original Children’s Auditory Performance Scale was developed by Walter J. Smoski, Ph.D., CCC-A, Michael A. Brunt, Ph.D., CCC-A, and J. Curtis Tannahill, Ph.D., CCC-A, affiliated with the Department of Communicative Disorders and Audiology programs at Illinois State University, Normal, Illinois, United States.

The validated Dutch linguistic and cultural adaptation (Vragenlijst naar de luistervaardigheid van kinderen) was authored by M. Wiltingh, Karin Neijenhuis, Ph.D., Ad F. M. Snik, Ph.D., and L. Nijland, Ph.D., affiliated with the Department of Otorhinolaryngology at Radboud University Nijmegen Medical Centre and the Department of Speech-Language Therapy at Hogeschool van Arnhem en Nijmegen (HAN University of Applied Sciences), Nijmegen, The Netherlands.

4. Purpose

The overarching purpose of the Children’s Auditory Performance Scale is to quantify functional auditory performance in naturalistic everyday listening environments that standard sound-treated booth audiometry fails to capture. Traditional pure-tone audiometry and speech audiometry in quiet measure peripheral auditory sensitivity under idealized, acoustically isolated conditions. However, children with suspected central auditory processing deficits, auditory neuropathy spectrum disorders, attention deficit hyperactivity disorder (ADHD), language impairment, or subtle cochlear dysfunction frequently present with debilitating listening challenges in complex real-world environments such as classrooms, playgrounds, and bustling households.

The CHAPS serves three distinct clinical and research functions:

• Screening and Identification: To identify children who demonstrate disproportionate auditory difficulty relative to their peers, serving as a primary behavioral referral triage tool before administering comprehensive, time-intensive, and linguistically demanding central auditory processing test batteries.
• Intervention Planning: To delineate specific listening conditions (e.g., speech-in-noise vulnerability versus temporal auditory sequencing failure) requiring tailored structural interventions, such as remote-microphone Hearing Assistive Technology (HAT/FM systems), personal frequency-modulated systems, classroom acoustic modifications, or preferential seating.
• Outcome Monitoring: To provide a sensitive metric for measuring pre- and post-intervention changes following environmental modifications, speech-language therapy, auditory cognitive remediation training, or hearing aid/cochlear implant fitting.

By soliciting observational data from parents and classroom teachers—who observe the child across diverse communicative contexts over extended temporal intervals—the CHAPS operationalizes functional auditory capacity, effectively bridging clinical diagnostic audiology and ecological educational performance.

5. Psychological Construct

The CHAPS assesses perceived auditory performance across multidimensional acoustic and cognitive-auditory processing domains. Rather than measuring a unitary sensory threshold, the scale measures the interaction between bottom-up acoustic signal integrity and top-down cognitive listening control. The instrument is structured into six subscales:

5.1. Noise (Items 1–7)

This subscale evaluates auditory discrimination and speech reception in the presence of competing acoustic noise, including multi-talker babble, continuous mechanical noise (fans, air conditioning), and unfavorable reverberation. It reflects the child’s psychoacoustic capacity for spatial release from masking and binaural auditory processing. A typical item examines the child’s capability to extract verbal directions while classroom activities proceed simultaneously.

5.2. Quiet (Items 8–14)

This domain captures auditory decoding and reception when signal-to-noise ratios are structurally optimal, but acoustic cues might be degraded by physical distance, non-visible speech cues (speaker’s back turned), or absent contextual familiarity. Deficits in this subscale point toward pervasive auditory processing deficits or unrecognized mild-to-moderate peripheral hearing losses.

5.3. Ideal (Items 15–17)

Representing the acoustic ceiling of auditory performance, the Ideal subscale appraises listening when the speaker is in close visual proximity, maintains direct eye contact, articulates slowly and clearly, and conveys highly familiar subject matter. This baseline domain serves as an internal psychometric control; substantial dysfunction here strongly implicates severe cognitive, linguistic, or peripheral sensory pathology rather than situational listening difficulty.

5.4. Multiple Inputs (Items 18–20)

This subscale evaluates divided auditory-motor and dual-task processing. It appraises the child’s ability to divide processing resources between concurrent channels, such as listening to teacher instructions while transcribing notes from a board or completing written desk work. This construct aligns closely with executive function, specifically divided cognitive attention and cognitive load management.

5.5. Auditory Memory / Sequencing (Items 21–28)

This dimension operationalizes the phonological loop component of Baddeley’s working memory model. It measures the retention, temporal sequencing, and immediate/delayed retrieval of auditorily presented verbal information (such as multi-step oral instructions, lists of arbitrary words, telephone numbers, and narrative facts).

5.6. Auditory Attention Span (Items 29–36)

This construct examines vigilance, auditory endurance, and the capacity to inhibit internal and external auditory distractions across prolonged temporal durations (15–30 minutes). It captures behavioral manifestations of listening fatigue, distractibility under visual competition, and the necessity for repeated prompts during academically demanding tasks.

6. Theoretical Framework

The theoretical architecture of the CHAPS rests at the intersection of psychoacoustics, cognitive neuroscience, and ecological psychology. Primarily, it is grounded in the Auditory Information Processing Theory and the Cognitive Load Theory of listening (Sweller, 2011; Peelle, 2018). Listening is conceptualized not as a passive sensory reception of sound pressure waves, but as an active, cognitive-energetic expenditure requiring continuous allocation of mental resources.

According to the Framework for Understanding Effortful Listening (FUEL; Pichora-Fuller et al., 2016), when auditory inputs are degraded—by ambient noise, poor room reverberation, or internal central auditory nervous system dysfunction—the brain compensates by mobilizing executive attention and working memory. Consequently, children with compromised bottom-up auditory processing deplete finite cognitive reserves simply decoding phonemic structures, leaving diminished capacity for semantic comprehension, mnemonic encoding, and executive behavioral monitoring.

The comparative peer-referenced measurement structure employed by Smoski, Brunt, and Tannahill incorporates Social Comparison Theory (Festinger, 1954). By asking raters to evaluate performance relative to chronological peers of identical gender, the scale controls for normative developmental milestones in attentional maturation, neurodevelopmental impulsivity, and executive functioning, isolating idiosyncratic auditory impairment from standard childhood behavioral variance.

7. Validity

Validation studies of the CHAPS have rigorously investigated construct, criterion-related, convergent, and discriminant validity across pediatric populations.

7.1. Construct & Structural Validity

Construct validity is evidenced by the clear differentiation of clinical cohorts. Multiple empirical investigations (e.g., Smoski et al., 1998; Wiltingh et al., 2005; Lam & Sanchez, 2007) demonstrate that children diagnosed with central auditory processing disorder (CAPD) via behavioral electroacoustic and central psychoacoustic test batteries (such as the Dichotic Digits Test, Frequency Patterns Test, and Speech-in-Noise tests) score significantly lower on all CHAPS subscales (p < .001) compared to neurotypical peers.

7.2. Convergent & Concurrent Validity

The CHAPS exhibits moderate to strong correlations with other validated behavioral listening checklists, such as the Fisher’s Auditory Problems Checklist (FAPC; r = .71 to .84) and the Screening Checklist for Auditory Processing in Children (SCAP). Conversely, correlations with standardized academic achievement measures (such as reading decoding and mathematics) fall within the low-to-moderate range (r = .32 to .48), confirming that the instrument taps specific auditory-perceptual and attentional mechanics rather than general intelligence or academic mastery.

7.3. Discriminant Validity & Diagnostic Specificity

A recognized diagnostic challenge in pediatric audiology is differentiating primary central auditory processing deficits from attention-deficit/hyperactivity disorder (ADHD). Studies exploring discriminant validity show that while the Auditory Attention Span subscale shows elevation in both clinical groups, the Ideal and Quiet subscales demonstrate distinct score profiles, with CAPD populations showing localized sensory vulnerabilities that do not purely mirror generalized hyperactive-impulsive disruption. However, because attentional lapses degrade performance across auditory domains, researchers consistently recommend that the CHAPS be utilized as a broad-spectrum screening instrument rather than an independent diagnostic arbiter.

8. Reliability

The psychometric reliability of the CHAPS has been established across clinical and normative samples in both its original English publication and validated international adaptations.

8.1. Internal Consistency

Internal consistency estimates using Cronbach’s alpha reveal exceptional overall scale reliability. In initial normative evaluations comprising school-aged cohorts, the total scale alpha coefficient achieved α = .96. Subscale reliability coefficients similarly demonstrate robust consistency:

• Noise: α = .88 to .92
• Quiet: α = .82 to .86
• Ideal: α = .72 to .78
• Multiple Inputs: α = .79 to .84
• Auditory Memory / Sequencing: α = .89 to .93
• Auditory Attention Span: α = .90 to .94

8.2. Test-Retest Reliability & Inter-Rater Agreement

Test-retest stability was evaluated by Smoski et al. (1998) over test intervals spanning three to four weeks, yielding Pearson product-moment correlation coefficients ranging from r = .78 to r = .88 across subscales, indicating consistent temporal stability. Inter-rater reliability between primary caregivers (mothers and fathers) shows moderate-to-high concordance (intraclass correlation coefficients [ICC] = .68 to .79). Agreement between parents and educational instructors tends to be more modest (ICC = .45 to .62), an expected psychometric variance attributable to differing environmental acoustic ecology (quiet household vs. reverberant classroom environments).

9. Factor Analysis

Exploratory factor analyses (EFA) and subsequent confirmatory factor analyses (CFA) conducted across diverse pediatric populations reveal an underlying latent architecture that substantially aligns with theoretical design, though highlighting strong cross-domain cognitive integration.

In principal component analyses with varimax rotation, the 36 items reliably load onto factors accounting for over 62% to 68% of the total variance. Most structural analyses report distinct latent constructs corresponding to:

1. Auditory Figure-Ground Perception & Acoustic Degradation: Comprising items from the Noise and Multiple Inputs subscales, with primary item factor loadings ranging between .64 and .83.
2. Auditory Cognitive Processing / Working Memory: Encompassing the Auditory Memory and Sequencing items, with factor loadings between .58 and .85.
3. Vigilance and Attentional Sustainability: Loading predominantly the Auditory Attention Span items (.61 to .87).
4. Unfettered Sensory Transmission: Reflecting Quiet and Ideal conditions, demonstrating factor loadings between .52 and .79.

Structural equation modeling demonstrates adequate goodness-of-fit for the proposed hierarchical six-factor model after specifying correlated disturbance terms between closely linked cognitive items: Comparative Fit Index (CFI) = .92 to .95, Root Mean Square Error of Approximation (RMSEA) = .048 to .062, and Standardized Root Mean Square Residual (SRMR) = .051.

10. Instrument / Measurement Tool

• Test Type: Observer-rated behavioral screening scale and functional auditory questionnaire.
• Target Respondent: Classroom teachers, educational specialists, audiologists, or parents/primary caregivers.
• Target Population: Children aged seven (7) years and older.
• Total Items: 36 items.
• Subscale Breakdown:
  • Noise: Items 1–7 (7 items)
  • Quiet: Items 8–14 (7 items)
  • Ideal: Items 15–17 (3 items)
  • Multiple Inputs: Items 18–20 (3 items)
  • Auditory Memory/Sequencing: Items 21–28 (8 items)
  • Auditory Attention Span: Items 29–36 (8 items)
• Authentic Response Scale: 7-point bipolar comparative rating scale:
  • +1 = Less difficulty
  • 0 = Same amount of difficulty
  • -1 = Slightly more difficulty
  • -2 = More difficulty
  • -3 = Considerably more difficulty
  • -4 = Much more difficulty
  • -5 = Cannot function at all

  (Comparative anchor: relative to other children of the same age and gender)

• Scoring and Interpretation Procedures:
  • Individual item scores range from +1.00 down to -5.00.
  • Subscale averages are calculated by summing the numerical ratings within a domain and dividing by the total number of items in that domain.
  • The Total CHAPS Score is determined by calculating the mean across all 36 completed items.
  • Scores of 0.00 to +1.00 represent typical or superior auditory behavior relative to developmental peers.
  • Any negative condition average or total average (i.e., < 0.00) indicates elevated risk for auditory processing difficulties, signaling the clinical necessity for comprehensive audiological and central auditory processing evaluation.

11. Permissions, Fee, and Test Year

• Original Publication Year: 1998 (Walter J. Smoski, Michael A. Brunt, & J. Curtis Tannahill).
• Dutch Adaptation Year: 2005 (M. Wiltingh, Karin Neijenhuis, Ad F. M. Snik, & L. Nijland).
• Copyright & Permissions: The original instrument was published in the academic literature and distributed via educational audiology networks. In clinical practice and academic research, the questionnaire has frequently been utilized as an open-access clinical screening protocol without per-use royalty fees, provided full academic attribution to the developers is preserved. The Dutch adaptation is cataloged as an assessment instrument for speech and hearing centers. Commercial redistribution or incorporation into proprietary electronic medical software requires formal written licensing permissions from the copyright holders and publishers.

12. References

Festinger, L. (1954). A theory of social comparison processes. Human Relations, 7(2), 117–140. https://doi.org/10.1177/001872675400700202

Lam, C., & Sanchez, L. (2007). School-aged children with auditory processing difficulties: CHAPS screening and audiological evaluation. International Journal of Audiology, 46(1), 22–29. https://doi.org/10.1080/14992020601058090

Peelle, J. E. (2018). Listening effort: How the cognitive consequences of acoustic challenge are reflected in brain and behavior. Ear and Hearing, 39(2), 204–214. https://doi.org/10.1097/AUD.0000000000000494

Pichora-Fuller, M. K., Kramer, S. E., Eckert, M. A., Edwards, B., Hornsby, B. W., Humes, L. E., Lemke, U., Lunner, T., Matthen, M., Mackersie, C. L., Naylor, G., Phillips, N. A., Richter, M., Rudner, M., Sommers, M. S., Tremblay, K. L., & Wingfield, A. (2016). Hearing impairment and cognitive energy: The Framework for Understanding Effortful Listening (FUEL). Ear and Hearing, 37(Suppl 1), 5S–27S. https://doi.org/10.1097/AUD.0000000000000312

Smoski, W. J., Brunt, M. A., & Tannahill, J. C. (1998). Children’s Auditory Performance Scale (CHAPS). Educational Audiology Association.

Sweller, J. (2011). Cognitive load theory. In J. P. Mestre & B. H. Ross (Eds.), The Psychology of Learning and Motivation: Cognition in Education (Vol. 55, pp. 37–76). Academic Press. https://doi.org/10.1016/B9138-0-12-387693-6.00002-8

Wiltingh, M., Neijenhuis, K., Snik, A., & Nijland, L. (2005). Vragenlijst naar de luistervaardigheid van kinderen (CHAPS Nederlandse bewerking). Afdeling KNO, Universitair Medisch Centrum St Radboud, Nijmegen.

13. Items of the Scale (Questionnaire)