The Influence of Caregiver Language on the Association Between Child Temperament and Spoken Language in Children Who Are Deaf or Hard of Hearing.

OBJECTIVES: To examine the interaction between child temperament and caregiver linguistic input (i.e., syntactic complexity and lexical diversity) on receptive language in children who are deaf or hard of hearing (DHH). DESIGN: Families of 59 DHH children ( Mage = 5.66 years) using spoken language for communication participated in this cross-sectional study. Caregivers completed the Child Behavior Questionnaire-Short Form, which measured child temperament across three established factors (i.e., effortful control, negative affectivity, surgency-extraversion) and participated with their child in a semi-structured, dyadic play interaction that occurred during a home visit. Caregivers' language during the play interaction was quantified based on lexical diversity and syntactic complexity. Children also completed norm-referenced receptive language measures (i.e., Comprehensive Assessment of Spoken Language-2, age-appropriate Clinical Evaluation of Language Fundamentals) during the home visit that were combined into a composite measure of child receptive language. RESULTS: When caregivers used lower to moderate levels of lexical diversity, child effortful control was positively related to child receptive language. However, when caregivers used higher levels of lexical diversity, child effortful control and child receptive language were not related to each other. CONCLUSIONS: Family environments rich in caregiver lexical input to children might provide a protective influence on DHH child language outcomes by helping to ensure DHH children with varying self-regulatory abilities achieve better spoken language comprehension. These findings highlight the importance of encouraging caregivers to provide rich and stimulating language-learning environments for DHH children.

Interactive Effects of Temperament and Family-Related Environmental Confusion on Spoken Language in Children Who Are Deaf and Hard of Hearing.

PURPOSE: The aim of this study was to examine the influence of caregivers' reports of family-related environmental confusion-which refers to the level of overstimulation in the family home environment due to auditory and nonauditory (i.e., visual and cognitive) noise-on the relation between child temperament and spoken language outcomes in children who are deaf and hard of hearing (DHH) in comparison to age-matched children with typical hearing (TH). METHOD: Two groups of families with children between 3 and 7 years of age (TH = 59, DHH = 58) were sequentially recruited from a larger longitudinal study on developmental outcomes in children who are DHH. Caregivers (all TH) completed questionnaires measuring three dimensions of child temperament (i.e., effortful control, negative affectivity, and surgency-extraversion) and family-related environmental confusion. A norm-referenced language measure was administered to children. Testing took place within the families' homes. RESULTS: For children who are DHH, effortful control was positively related to spoken language outcomes, but only when levels of family-related environmental confusion were low to moderate. Family-related environmental confusion did not interact with temperament to influence spoken language in children with TH. CONCLUSIONS: Homes with low-to-moderate levels of environmental confusion provide an environment that supports DHH children with better effortful control to harness their self-regulatory skills to achieve better spoken language comprehension than those with lower levels of effortful control. These findings suggest that efforts to minimize chaos and auditory noise in the home create an environment in which DHH children can utilize their self-regulatory skills to achieve optimal spoken language outcomes.

Naturalistic Use of Aspect Morphology in Deaf and Hard-of-Hearing Children.

Grammatical morphology often links small acoustic forms to abstract semantic domains. Deaf and hard-of-hearing (DHH) children have reduced access to the acoustic signal and frequently have delayed acquisition of grammatical morphology (e.g., Tomblin, Harrison, Ambrose, Walker, Oleson & Moeller, 2015). This study investigated the naturalistic use of aspectual morphology in DHH children to determine if they organize this semantic domain as normal hearing (NH) children have been found to do. Thirty DHH children (M = 6;8) and 29 NH children (M = 5;11) acquiring English participated in a free-play session and their tokens of perfective (simple past) and imperfective (-ing) morphology were coded for the lexical aspect of the predicate they marked. Both groups showed established prototype effects, favoring perfective + telic and imperfective + atelic pairings over perfective + atelic and perfective + atelic ones. Thus, despite reduced access to the acoustic signal, this DHH group was unimpaired for aspectual organization.

Perception of degraded speech by chinchillas (Chinchilla laniger): Word-level stimulus generalization.

One characteristic of human speech perception is a remarkable ability to recognize speech when the speech signal is highly degraded. It has been argued that this ability to perceive highly degraded speech reflects speech-specific mechanisms. The present study tested this hypothesis by measuring the ability of chinchillas to recognize noise-vocoded (NV) versions of naturally spoken monosyllabic words using operant conditioning in a stimulus generalization paradigm. Chinchillas do not generalize the vocoded words to be perceptually equivalent to the naturally spoken words. The responses from chinchillas to the vocoded words fall well below their responses to the naturally spoken words. In this case, pitch cues rather than speech cues may be controlling the behavioral responses. To reduce pitch cues, chinchillas were retrained using 64-channel NV words. The responses from chinchillas to the vocoded test words were now similar to those of the 64-channel versions and were similar to those obtained from human listeners. However, responses obtained from chinchillas to time-reversed versions were high and similar to responses obtained to time-normal versions suggesting that the cue controlling behavioral responses was the phonetic structure of the words. These results show that chinchillas used different acoustic cues than human listeners. The ability of chinchillas to recognize NV words as being perceptually equivalent to the naturally spoken versions is inferior compared to that of human listeners. The findings suggest that the ability of human listeners to recognize highly degraded speech is unlikely to be based solely on the general auditory and perceptual mechanisms that are common among mammals. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Change and consistency in descriptions of child maltreatment: A comparison of caregivers' perspectives 20 years apart.

Although approximately one-fifth of child maltreatment reports originate with family members, friends, neighbors, or community members, their efforts to identify and report child maltreatment are still not well understood. Nor is it well understood how these individuals' perceptions of what constitutes maltreatment may change over time. This study examined descriptions of behavior perceived as maltreatment by caregivers of minors in Cleveland, Ohio, USA neighborhoods. Data were obtained from two neighborhood-based cross-sectional surveys of caregivers of minors: one conducted in 1995-1996 and the other in 2014-2015. The sample consisted of 400 caregivers living in 20 census tracts with varying profiles of maltreatment risk in the 1995-1996 study, and 400 caregivers living in the same 20 census tracts surveyed in 2014-2015. Each time point, participants were asked to provide three examples of behaviors they considered to be child abuse and neglect. All responses were categorized using the 1995-1996 coding scheme. Logistic regression analyses including all 800 participants, adjusted for individual and neighborhood characteristics, and accounting for residential clustering in neighborhoods, showed that participating in the 2014-2015 survey was associated with 51% increased odds of mentioning an act of neglect and a 39% decreased odds of mentioning an act of physical abuse. No significant temporal changes were observed for inadequate supervision, emotional or verbal abuse, sexual abuse, and parental misbehavior. Associations between specific types of maltreatment and individual and neighborhood characteristics were observed. Potential practice implications and future research directions include seeking greater familiarity with caregivers' perceptions of maltreating behaviors to better understand how these perceptions might "translate" into child maltreatment reports and investigations.

Effectiveness of Two-Talker Maskers That Differ in Talker Congruity and Perceptual Similarity to the Target Speech.

Previous work has shown that masked-sentence recognition is particularly poor when the masker is composed of two competing talkers, a finding that is attributed to informational masking. Informational masking tends to be largest when the target and masker talkers are perceptually similar. Reductions in masking have been observed for a wide range of target and masker differences, including language: Performance is better when the target and masker talkers speak in different languages, compared with the same language. The present study evaluated normal-hearing adults' sentence recognition in a two-talker masker as a function of the perceptual similarity between the target and each of the two masker streams. The target was English, and the maskers were composed of English, time-reversed English, or Dutch. These three masker types are known to vary in the informational masking they exert. The two talkers within the two-talker maskers were either congruent (e.g., both English) or incongruent (e.g., one English, one Dutch). As predicted, mean performance was worse for the congruent English masker than the congruent time-reversed English or congruent Dutch maskers. Incongruent two-talker maskers, with just one English masker stream, were only modestly less effective than the congruent English masker. This result indicates that two-talker masker effectiveness was determined predominantly by the one masker stream that was most perceptually similar to the target. Speech recognition in a single-talker masker differed only marginally between the English, Dutch, and time-reversed English masker types, suggesting that perceptual similarity may be more critical in a two-talker than a one-talker masker.