Stimuli used in research on the perception of the speech signal have often been obtained from simple filtering and distortion of the speech waveform, sometimes accompanied by noise. However, for more complex stimulus generation, the parameters of speech can be manipulated, after analysis and before synthesis, using various types of algorithms to…

In the 1920s and 1930s, interpretations of reading readiness held that learning to read occurred at a specific point in cognitive development. Postponement of reading instruction until a child reached this stage of maturity was widely accepted at that time, and throughout the 1940s and 1950s. The 1960s marked a transition period in terms of…