Final answer:
The true statement about the high amplitude sucking method is that it assesses infants' preferences through rates of sucking. This method measures an infant's interest in various stimuli, which aids in understanding early cognitive development and may contribute to early intervention in language disorders.
Step-by-step explanation:
The high amplitude sucking method is a technique used in developmental psychology to assess infants' preferences and cognitive processes. By measuring the rate of sucking in response to different stimuli, researchers can infer what captures an infant's interest. Unlike older children who can verbally communicate their preferences or understanding, infants require indirect methods of assessment, hence the utility of the sucking method.
The statement which is true regarding the high amplitude sucking method is B) It assesses infants' preferences through sucking rates. Infants naturally suck more vigorously when they are interested or stimulated by something. This increased or high amplitude sucking is taken as an indicator of the infant's preference or recognition. The method has been shown to be reliable for studying certain aspects of infant behavior, particularly in relation to auditory stimuli and early cognitive development.
Researchers like to see infants for cognitive development studies as early as possible because early behavior offers vital clues about cognitive processes. Establishing a baseline is crucial in this type of research to measure changes or differences in behavior relative to a standard or control condition. Information collected from these studies could potentially help to identify and intervene in language problems in children early on, thereby improving outcomes for child development.