geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Infants with Down syndrome and their interactions with objects: development of exploratory actions after reaching onset


, : Infants with Down syndrome and their interactions with objects: development of exploratory actions after reaching onset. Research in Developmental Disabilities 34(6): 1906-1916

During infant development, objects and their functions are learned by means of active exploration. Factors that may influence exploration include reaching and grasping ability, object properties and the presence of developmental disorders. We assessed the development of exploratory actions in 16 typically-developing (TD) infants and 9 infants with Down syndrome (DS) after reaching onset. Infants with DS reached for and explored objects less frequently than TD infants, especially small objects. Over time, the amount of reaches increased in both groups, with no changes in the amount of exploration in the DS group. Pre-grasping actions were different across objects, but less efficient in generating action-relevant information in the DS group. These infants also performed fewer behaviors requiring complex motor skills. The results suggest that perceptual-motor abilities determine different exploratory behaviors in TD and DS infants. The reduced amount and complexity of exploratory actions may impact developmental outcome in DS.

US$19.90

PMID: 23584171

DOI: 10.1016/j.ridd.2013.03.001


Other references

Bao, Q.; Feng, J.; Chen, F.; Mao, W.; Liu, Z.; Liu, K.; Liu, C., 2012: A new automatic baseline correction method based on iterative method. A new automatic baseline correction method for Nuclear Magnetic Resonance (NMR) spectra is presented. It is based on an improved baseline recognition method and a new iterative baseline modeling method. The presented baseline recognition method ta...

Jonsson, T.; Steinsson, K.; Jonsson, H.; Geirsson, A.J.; Thorsteinsson, J.; Valdimarsson, H., 1998: Combined elevation of IgM and IgA rheumatoid factor has high diagnostic specificity for rheumatoid arthritis. The diagnostic value of measuring rheumatoid factor (RF) by agglutination or isotype-specific enzyme-linked immunosorbent assay (ELISA) was compared. The study included 70 patients with rheumatoid arthritis (RA) and 205 patients with various other...

Ramsugit, S.; Pillay, M., 2016: Pili of Mycobacterium tuberculosis: current knowledge and future prospects. Many pathogenic bacteria express filamentous appendages, termed pili, on their surface. These organelles function in several important bacterial processes, including mediating bacterial interaction with, and colonization of the host, signalling ev...

Borison, H.L., 1978: Central nervous respiratory depressants--anesthetics, hypnotics, sedatives and other respiratory depressants. Pharmacology & Therapeutics. Part B: General & Systematic Pharmacology 3(3): 377-395

Bartoszeck, M.K.levicz; Rostirolla, S.P.res; de Campos, A.F.tima; Machado, A.M.riel Lima, 2008: Modelagem volumetrica e simulacao de fluxo em arenitos analogos a reservatorios profundos; exemplo da formacao Campo Mourao, bacia do Parana. Analog modeling of high resolution data was done into an approach for flow simulation (gas). High resolution seismic, outcrop information and shallow wells were used in an integrated framework to generate computational geological models. The study...

Matsuda, A.; Yamada, C., 1965: Food chemical studies on gelatin. III. Properties of gelatin as a food stabilizer. III. A 10% solution of dried whole milk with 0.5% added gelatin was heated at 65 degrees C for 5 min and then cooled to 4 degrees C. Addition of gelatin depressed the freezing point of the mixture and with this heat treatment was considered a usef...

Kim, S.; Kim, N.; Dong, B.; Boren, D.; Lee, S.A.; Das Gupta, J.; Gaughan, C.; Klein, E.A.; Lee, C.; Silverman, R.H.; Chow, S.A., 2008: Integration site preference of xenotropic murine leukemia virus-related virus, a new human retrovirus associated with prostate cancer. Xenotropic murine leukemia virus-related virus (XMRV) is a new human gammaretrovirus identified in prostate cancer tissue from patients homozygous for a reduced-activity variant of the antiviral enzyme RNase L. Neither a casual relationship betwee...

Dinour, D.; Ives, H.E., 1995: Effect of mechanical strain on intracellular in vascular smooth muscle cells. Journal of the American Society of Nephrology 6(3): 620

Meinertz, T.; Heitzer, T., 2002: Primaere und sekundaere Praevention der koronaren Herzkrankheit: Rauchen. Although smoking is one of the major risk factors for the development of atherosclerosis, the exact mechanism of smoking-related vascular disease is not known. Smoking causes acute hemodynamic alterations such as increase in heart rate, systemic a...

Ratner, D., 2000: Real photographic prints from digital images. Digital photography is emerging as a standard method of documenting preoperative, intraoperative, and postoperative results in the clinical setting. While hard copies of these electronic images can be quickly and easily generated on color laser or...