Cognitive Developmental Milestones Cognitive skills are those associated with learning, and include memory, creative thinking skills and the understanding of concepts, such as numbers and time. For example, an important cognitive developmental milestone for a newborn is to recognize his mother's voice, a skill he may have achieved prior to birth, according to the authors of "Life-Span Human Development." The development of children's cognitive skills becomes closely associated with the development of their language skills. Through language, children can begin to structure their thinking, improve their memory and learn about their world. For example, between the age of 9 to 12 months, babies begin to point to objects of interest with their index finger. The achievement of this developmental milestone prompts parents and care givers to name and talk about the objects that babies point toward, thus stimulating the infant's memory and comprehension skills.
Language Developmental Milestones Language development includes the ability to understand -- receptive language skills -- and to vocalize -- expressive language skills. Language development begins from birth, with the infant listening to the sound of voices around her and communicating her