features of speech in left-handed primary school children marina voronova tatiana akhutina olga...
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FEATURES OF SPEECH IN LEFT-HANDED
PRIMARY SCHOOL CHILDREN
Marina VoronovaTatiana Akhutina
Olga Ruzmanova
The Lomonosov Moscow State University, Russia
Left-handed people are characterized by
• intra- and interhemispheric functional diffusion of brain structures,
• non-pronounced functional specialization of hemispheres,
• instability of interaction between voluntary and involuntary levels of the vertical mental activity of the regulatory system (Simernitskaya, 1978; Mikadze, 2008).
Left-handed children have disproportions and retardations in the
next mental functions:
• for mnestic processes (memory)
• сonstructive processes
• affective-will processes,
• speech function (oral and written),
• reading and
• counting skills (Mikadze, 2008; Semenovich, A.V., 2009)
The Aim
- To reveal differences in the formation of certain processes of speech comprehension and production
Research
I. Lateral organization profile - 243 participants (first grade elementary school – 7-8 years)
II. Diagnostics of speech function – 78 participants
Lateral organization profile
• sensor asymmetry coefficients (ear, eye) were equivalent
• manual asymmetry coefficients were quantitatively commensurable (e.g., -37 in a left-handed and 39 in a right-handed)
As a result of this stage of the research, 39 left-handed and 39 right-handed children were accepted for the next stage of the experiment.
Diagnostics of speech function*
• Expressive speech• Impressive speech
* «Diagnostics of speech impairments at school children using neuropsychological methods» (Fotekova T.A.., Akhutina T.V., 2007)
Expressive speech
• Motor realization of speech
• Formation of word-building skills
• Sintax
• Cojoint speech
• Nominative function
Impressive speech
• Peculiarities of acoustic analisys
• Audio-verbal memory
• Semantic differentiation of words
• Comprehention of complex logico-grammatical constructions
• Features of phonemic perception
Results of the research expressive speech
86
83
120
63
110
85
95
129
71
114
0
20
40
60
80
100
120
140
Motor realizationof speech
Formation ofword-building
skills*
Sintaxis ** Cojoint speech** Nominativefunction left-handed
right-handed
(**-p<0.01, * - p<0.05)
Results of the research impressive speech
61
73
18
2018
21
0
10
20
30
40
50
60
70
80
Semantic and acousticdifferentiation of words**
Comprehention of complexlogico-grammatical
constructions
Features of phonemicperception left-handed
right-handed (** - p<0.01)
Conclusion
• Left-handed children are characterized by a lower level of formation of separate component of oral speech (p<0,01) in comparison with the right-handed.
• With right-handed children the average scores for different test correspond to the population average, while the left-handed show lower scores, but do prominantly exceed the ones of children with general alalia and mental retardation (Fotekova, Akhutina 2007).
Conclusion
• Never the less the highest assessments of left-handed children in all tests are corresponding to the ones of the right-handed, which is evidence of heterogeneity of the left-handed sample group, some subjects of which are capable of successfully performing given tasks. This confirms the assumption of discontinuity of certain components of the higher mental functions within the norm and pathology (Akhutina, T.V., Pylaeva, N.M.,2008).
