Purpose: The goal of this study was to investigate the effect of age on phoneme recognition performance in which the stimuli varied in the amount of temporal information available in the signal. Chronological age is increasingly recognized as a factor that can limit the amount of benefit an individual can receive from a cochlear implant (CI).…

How to best characterize cognitive development? The claim put forward in this article is that development is the improvement of a kind of coordination among a variety of factors. To determine the development of coordination in a cognitive task, children between 4 and 12 years of age and adults participated in a time estimation task: They had to…

Time is central to any understanding of the world. In adults, estimation errors grow linearly with the length of the interval, much faster than would be expected of a clock-like mechanism. Here we present the first direct demonstration that this is also true in human infants. Using an eye-tracking paradigm, we examined 4-, 6-, 10-, and…

Birthday-deathday relationship has been called an artifact due to continuous depletion of population with age. The increased death rate with age, however, cancels this effect at ages 75 to 84. There remains a 33 percentexcess of deaths from heart disease among married persons aged 75 and older in the three-day period centered at the birthday.…

Four studies explored children's ability to differentiate future distances of events. Findings indicated that 4-year-olds failed to differentiate future distances. Five-year-olds could distinguish events occurring in coming weeks/months from those many months away. Six- through 8-year-olds made more differentiated judgments than younger children…

Pressure variations applied by newborns and by infants 1 to 4 months old to rubber nipples were recorded in three different procedures under no-fluid conditions. In the first study, infants were presented for 90 seconds with novel nipples varying in shape and in shape plus material. Results suggested that a developmental trend existed for an…

Used multilevel analyses to examined the amounts of time infants spent asleep, awake, content, feeding, fussing, and crying at 2, 6, 12, and 40 weeks of age. Found that day-to-day fluctuations accounted for between 44 and 53% of the variance in amounts of time sleeping, fussing, and crying. (MDM)