You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is By 2 weeks of age, infants normally show all of the following signs Except and explain in detail?
By 2 weeks of age, infants show stepping, palmar grasp, the rooting reflex, and the copying of facial expressions. The Babinski reflex is normally positive until a child is approximately 12 months of age. Ref: Nelson paediatrics; Table 11-1