Lack of sleep is a common problem among high-school students, and it can do serious damage, hampering mental activity and resulting in reduced academic performance.
While advances in prosthetics have made it possible for many lower-limb amputees to regain full mobility, the track record for overcoming brain injuries and chronic P.T.S.D. — both capable of altering personality and hampering mental functioning — is more spotty, experts acknowledge.
History has shown us that former presidents have suffered conditions hampering their mental function while still in office, including Ronald Reagan, Calvin Coolidge and Woodrow Wilson.
Measuring the levels of the stress hormone cortisol in infants found that poverty, and the amount of time spent in poverty, can hamper the mental development of children.
Child malnutrition is associated with morbidity and mortality among children, and also hampers their mental development, educational performance and intellect [7, 8].
He said that severe cases of anaemia had also continued to hamper the mental and physical development of children in Zambia, resulting in a large number of them being stunted in their growth or mentally retarded.
Pianist and ICP founder-member Misha Mengelberg, now 77 and latterly hampered by some mental wear and tear, was "the ghost at the feast" as one witness put it – he had come over with the group but nobody knew when, or if, he would take to the stage.
Under the new rules, most families will not be able to obtain extensions after they have been on welfare for a total of 39 months unless they can show that their efforts to find work have been hampered by severe mental or physical problems or learning disabilities.
Although severe mental retardation hampered one child from completing the child-report questionnaire even with an interviewer's assistance, the child's parents had no problems in completing the parent-report.
Iodine deficiency causes goiter, birth defects, deafness and paralysis, and hampers children's mental and physical development.
