Karla K Mcgregor
Biographic Data
| ID | 4055017 |
|---|---|
| NAME | Karla K Mcgregor |
| GIVEN NAMES | Karla K |
| FAMILY NAME | Mcgregor |
| SIGNATURE | MCGREGOR K K |
| AFFILIATIONS | University of Iowa |
| ORCID | 0000-0003-0612-0057 |
| VERIFIED | Yes |
| TOTAL WORKS | 13 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 13 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1991 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 0 |
Subcortical brain iron and its link to verbal memory in children with developmental language disorder
Developmental Language Disorder (DLD) is a common neurodevelopmental condition characterized by significant difficulty with language learning, comprehension, and expression. The neurocognitive bases of DLD are underspecified but are thought to be related, in part, to altered basal ganglia (BG). The BG are known to have a high level of brain iron, which contributes to myelination and dopaminergic pathways among other physiological mechanisms. In t…
Initial evidence of altered functional network connectivity in children with developmental language disorder
The role of maternal psychosocial perceptions in parent-training programs
Parent–child interaction is critical for early language and literacy development. Parent training programs have proliferated to support early interactions. However, many environmental and psychosocial factors can impact the quality of parent–child language and literacy interactions as well as training program outcomes. This preliminary randomized controlled trial examined maternal perceived self-efficacy and locus of control during a language and…
Favorite Words as a Window onto the Aesthetic Function of Language
This article characterizes the aesthetic properties of English words. One thousand adult speakers of American English reported their favorite words and justified their selections. Each word was coded for phonological characteristics, valence, and frequency of occurrence and compared with words from a corpus of everyday English from Reader’s Digest. The participants’ stated reasons for their selections were categorized as utilitarian (meaning, use…
Cultural influences on the developing semantic lexicon
To determine whether the developing semantic lexicon varies with culture, we examined the animal and food naming of children from three communities distinguished by language, cultural heritage, and population density. The children were five- and seven-year-olds from Australia (n = 197), Taiwan (n = 456), and the US (n = 172). Naming patterns revealed hierarchical and flexible organization of the semantic lexicon. The content of the lexicon, parti…
The role of elicited verbal imitation in toddlers’ word learning
This study is about the role of elicited verbal imitation in toddler word learning. Forty-eight toddlers were taught eight nonwords linked to referents. During training, they were asked to imitate the nonwords. Naming of the referents was tested at three intervals (one minute later [uncued], five minutes, and 1–7 days later [cued]) and recognition at the last two intervals. Receptive vocabulary, nonword repetition, and expressive phonology were a…
A story about a word
We trained forty German-speaking children aged 1;8–2;0 in their comprehension of UNTER [UNDER]. The target word was presented within semantically organized input in the form of a ‘narrative’ to the experimental group and within ‘unconnected speech’ to the control group. We tested children's learning by asking them to perform an UNDER-relation before, immediately after, and again one day after the training using familiarized and unfamiliarized mat…
Gesture as a support for word learning
Forty children, aged 1 ; 8–2 ; 0, participated in one of three training conditions meant to enhance their comprehension of the spatial term under : the +Gesture group viewed a symbolic gesture for under during training; those in the +Photo group viewed a still photograph of objects in the under relationship; those in the Model Only group did not receive supplemental symbolic support. Children's knowledge of under was measured before, immediately …
The precocious two-year-old
This is a study of the lexical and grammatical abilities of 16 lexically precocious talkers. These children, aged 2;0 were compared to their age-matched peers, 22 typical talkers aged 2;0, and their expressive vocabulary-matched peers, 22 typical talkers aged 2;6. Individual differences in children's lexical knowledge at 2;0 were stable – evident in parent report, laboratory observation, and an experimental fast-mapping paradigm. In accordance wi…
Genetic and environmental interactions in determining the early lexicon
A set of tri-zygotic quadruplets, three girls and one boy, participated in weekly observations from 1;2 to 1;10 (years;months), a period of transition from prelinguistic gesture to 50 words. In the study, one girl served as a genetic mate to her identical twin and a biological risk mate to her fraternal sister. The biological risk mates achieved milestones in lexical development at similar times; however, the genetic mates demonstrated more simil…
Early lexical development in English- and Korean-speaking children
The present study examined the composition of the early productive vocabulary of eight Korean- and eight English-learning children and the morpho-syntactic, semantic, and pragmatic characteristics of their caregivers' input in order to determine parallels between caregiver input and early lexical development. Vocabulary acquisition was followed using maternal diary and checklists for the Korean-learning children (from a mean age of 1;6 to 1;9) an…
Object naming at multiple hierarchical levels
According to the storage hypothesis (Kail & Leonard, 1986), word-finding deficits in young children are not the direct result of deficient retrieval strategies; they are a manifestation of a general delay in language development that affects lexical storage. In the current study, we explored one aspect of lexical storage, the hierarchical organization of the semantic system, in 13 preschoolers with word-finding deficits (WF) and 13 preschoolers w…
Unusual phonological patterns and their underlying representations
An unusual phonological pattern exhibited by a child aged 2;9 is described. The pattern involved the production of word-final strident continuants in words whose adult forms contain these features in initial, rather than final position (e.g. [ops] for soap ). The data are interpreted as compatible with models of child phonology that permit direct mapping of features to final position
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Unusual phonological patterns and their underlying representations
An unusual phonological pattern exhibited by a child aged 2;9 is described. The pattern involved the production of word-final strident continuants in words whose adult forms contain these features in initial, rather than final position (e.g. [ops] for soap ). The data are interpreted as compatible with models of child phonology that permit direct mapping of features to final position
Object naming at multiple hierarchical levels
According to the storage hypothesis (Kail & Leonard, 1986), word-finding deficits in young children are not the direct result of deficient retrieval strategies; they are a manifestation of a general delay in language development that affects lexical storage. In the current study, we explored one aspect of lexical storage, the hierarchical organization of the semantic system, in 13 preschoolers with word-finding deficits (WF) and 13 preschoolers w…
Early lexical development in English- and Korean-speaking children
The present study examined the composition of the early productive vocabulary of eight Korean- and eight English-learning children and the morpho-syntactic, semantic, and pragmatic characteristics of their caregivers' input in order to determine parallels between caregiver input and early lexical development. Vocabulary acquisition was followed using maternal diary and checklists for the Korean-learning children (from a mean age of 1;6 to 1;9) an…
Genetic and environmental interactions in determining the early lexicon
A set of tri-zygotic quadruplets, three girls and one boy, participated in weekly observations from 1;2 to 1;10 (years;months), a period of transition from prelinguistic gesture to 50 words. In the study, one girl served as a genetic mate to her identical twin and a biological risk mate to her fraternal sister. The biological risk mates achieved milestones in lexical development at similar times; however, the genetic mates demonstrated more simil…
The precocious two-year-old
This is a study of the lexical and grammatical abilities of 16 lexically precocious talkers. These children, aged 2;0 were compared to their age-matched peers, 22 typical talkers aged 2;0, and their expressive vocabulary-matched peers, 22 typical talkers aged 2;6. Individual differences in children's lexical knowledge at 2;0 were stable – evident in parent report, laboratory observation, and an experimental fast-mapping paradigm. In accordance wi…
Gesture as a support for word learning
Forty children, aged 1 ; 8–2 ; 0, participated in one of three training conditions meant to enhance their comprehension of the spatial term under : the +Gesture group viewed a symbolic gesture for under during training; those in the +Photo group viewed a still photograph of objects in the under relationship; those in the Model Only group did not receive supplemental symbolic support. Children's knowledge of under was measured before, immediately …
A story about a word
We trained forty German-speaking children aged 1;8–2;0 in their comprehension of UNTER [UNDER]. The target word was presented within semantically organized input in the form of a ‘narrative’ to the experimental group and within ‘unconnected speech’ to the control group. We tested children's learning by asking them to perform an UNDER-relation before, immediately after, and again one day after the training using familiarized and unfamiliarized mat…
The role of elicited verbal imitation in toddlers’ word learning
This study is about the role of elicited verbal imitation in toddler word learning. Forty-eight toddlers were taught eight nonwords linked to referents. During training, they were asked to imitate the nonwords. Naming of the referents was tested at three intervals (one minute later [uncued], five minutes, and 1–7 days later [cued]) and recognition at the last two intervals. Receptive vocabulary, nonword repetition, and expressive phonology were a…
Cultural influences on the developing semantic lexicon
To determine whether the developing semantic lexicon varies with culture, we examined the animal and food naming of children from three communities distinguished by language, cultural heritage, and population density. The children were five- and seven-year-olds from Australia (n = 197), Taiwan (n = 456), and the US (n = 172). Naming patterns revealed hierarchical and flexible organization of the semantic lexicon. The content of the lexicon, parti…
Favorite Words as a Window onto the Aesthetic Function of Language
This article characterizes the aesthetic properties of English words. One thousand adult speakers of American English reported their favorite words and justified their selections. Each word was coded for phonological characteristics, valence, and frequency of occurrence and compared with words from a corpus of everyday English from Reader’s Digest. The participants’ stated reasons for their selections were categorized as utilitarian (meaning, use…
The role of maternal psychosocial perceptions in parent-training programs
Parent–child interaction is critical for early language and literacy development. Parent training programs have proliferated to support early interactions. However, many environmental and psychosocial factors can impact the quality of parent–child language and literacy interactions as well as training program outcomes. This preliminary randomized controlled trial examined maternal perceived self-efficacy and locus of control during a language and…
Subcortical brain iron and its link to verbal memory in children with developmental language disorder
Developmental Language Disorder (DLD) is a common neurodevelopmental condition characterized by significant difficulty with language learning, comprehension, and expression. The neurocognitive bases of DLD are underspecified but are thought to be related, in part, to altered basal ganglia (BG). The BG are known to have a high level of brain iron, which contributes to myelination and dopaminergic pathways among other physiological mechanisms. In t…
Initial evidence of altered functional network connectivity in children with developmental language disorder
Psychology (13 works) · Language Development and Disorders (11 works) · Reading and Literacy Development (11 works) · Linguistics (10 works) · Developmental psychology (9 works) · Language development (8 works) · Cognitive psychology (6 works) · Language acquisition (6 works) · Vocabulary (6 works) · Child and Animal Learning Development (5 works)