A substantial amount of studies have addressed the influence of sound on human performance. In many of these, however, the large acoustic differences between experimental conditions prevent a direct translation of the results to realistic effects of room acoustic interventions. This review identifies those studies which can be, in principle, translated to (changes in) room acoustic parameters and adds to the knowledge about the influence of the indoor sound environment on people. The review procedure is based on the effect room acoustics can have on the relevant quantifiers of the sound environment in a room or space. 272 papers containing empirical findings on the influence of sound or noise on some measure of human performance were found. Of these, only 12 papers complied with this review's criteria. A conceptual framework is suggested based on the analysis of results, positioning the role of room acoustics in the influence of sound on task performance. Furthermore, valuable insights are pre- sented that can be used in future studies on this topic. Whi le the influence of the sound environment on performance is clearly an issue in many situations, evidence regarding the effectiveness of strategies to control the sound environment by room acoustic design is lacking and should be a focus area in future studies.
The purpose of this study is to describe the speech characteristics in an English-speaking Ugandan boy of 4.5 years who has a rare paramedian craniofacial cleft (unilateral lip, alveolar, palatal, nasal and maxillary cleft, and associated hypertelorism). Closure of the lip together with the closure of the hard and soft palate (one-stage palatal closure) was performed at the age of 5 months. Objective as well as subjective speech assessment techniques were used. The speech samples were perceptually judged for articulation, intelligibility and nasality. The Nasometer was used for the objective measurement of the nasalance values. The most striking communication problems in this child with the rare craniofacial cleft are an incomplete phonetic inventory, a severely impaired speech intelligibility with the presence of very severe hypernasality, mild nasal emission, phonetic disorders (omission of several consonants, decreased intraoral pressure in explosives, insufficient frication of fricatives and the use of a middorsum palatal stop) and phonological disorders (deletion of initial and final consonants and consonant clusters). The increased objective nasalance values are in agreement with the presence of the audible nasality disorders. The results revealed that several phonetic and phonological articulation disorders together with a decreased speech intelligibility and resonance disorders are present in the child with a rare craniofacial cleft. To what extent a secondary surgery for velopharyngeal insufficiency, combined with speech therapy, will improve speech intelligibility, articulation and resonance characteristics is a subject for further research. The results of such analyses may ultimately serve as a starting point for specific surgical and logopedic treatment that addresses the specific needs of children with rare facial clefts.
BackgroundSeveral conditions and diseases can result in speech problems that can have a negative impact on everyday functioning, referred to as communicative participation. Subjective problems with acquired speech problems are often assessed with the speech handicap index (SHI). To assess generic participation problems, the Utrecht Scale for Evaluation of Rehabilitation–Participation (USER-P) questionnaire is frequently used. The English questionnaire Communicative Participation Item Bank—short form (CPIB short form) is a 10-item valid, reliable instrument that assesses communicative participation. In the absence of a Dutch equivalent, translation and validation of the CPIB short form was required.AimsTo translate the CPIB short form into Dutch, and to determine its psychometric properties for the group of adults with speech problems resulting from a neurological aetiology or head and neck cancer.Methods & ProceduresTranslation of the CPIB short form was performed following the instructions of the European Organisation for Research and Treatment for Cancer (EORTC). In a cross-sectional multi-centre study, participants completed the Dutch CPIB short form together with the SHI and USER-P, and the CPIB a second time after 2 weeks. We assessed internal consistency and test–retest reliability of the CPIB. Construct validity was assessed based on correlations with SHI, USER-P and speech assessments.Outcomes & ResultsIn the validation study, 122 participants were included: 51 with dysarthria due to different neurological disorders, 48 with speech problems due to head and neck cancer treatment and 23 healthy controls. Internal consistency of the items was high (Cronbach's alpha = 0.962), the intraclass correlation coefficient (ICC) for test–retest reliability was high 0.908 (95% CI = 0.870–0.935). Construct validity was supported by a strong correlation between the Dutch CPIB short form and the SHI total score (SHI total rs = 0.887) and a moderate correlation between the Dutch CPIB-10 and the USER-P subscales (USER-P Frequency rs = 0.365; USER-P restrictions and USER-P satisfaction rs = 0.546). A moderate correlation was found between the Dutch CPIB-10 and the speech performance assessments (degree of distortedness r = −0.0557; p ≤ 0.001; degree of intelligibility r = 0.0562).Conclusions & ImplicationsThe Dutch CPIB short form provides a valid and reliable tool for clinical practice and research purposes. It allows clinicians to start using this PROM in clinical and research practice to systematically investigate the impact of the speech problems on communicative participation in a Dutch-speaking population.What this paper addsWhat is already known on the subjectCommunicative participation allows people to take part in life situations, but can be affected by acquired speech problems. The CPIB is a patient-reported outcome measure for the assessment of this concept. For the English language the 46-item bank and a 10-item short form is available.What this paper adds to existing knowledgeThis paper describes the process of translation of the CPIB short form into Dutch, and confirms its reproducibility and validity.What are the potential or actual clinical implications of this work?With this validated Dutch version of the CPIB short form available, professionals can implement this tool in clinical and research practice to systematically evaluate communicative participation.
