Human Growth and Development Exam 1

Correct Answer: A

Rationale: The correct answer is A: Reflexes. Reflexes are automatic, involuntary responses to specific stimuli and are the most obvious organized patterns of behavior in a newborn baby. Examples of newborn reflexes include sucking, rooting, grasping, and the Moro reflex. These reflexes are crucial for the newborn's survival and overall development. Choice B, states of arousal, refers to different levels of consciousness and responsiveness, not organized behavior patterns. Choice C, shrill cries, is a form of communication and not an organized behavior pattern. Choice D, sleep patterns, while important for newborns, are not the most obvious organized behavior patterns.

Correct Answer: B

Rationale: Unlike adults, newborn babies see nearby objects most clearly. This is due to the fact that newborns have a limited ability to focus their eyes on objects that are farther away. Their visual acuity is not fully developed at birth, leading to clearer vision of objects situated at a close distance. Choice A is incorrect because newborn babies have a well-developed sense of smell. Choice C is incorrect as newborns typically show a preference for familiar voices, such as their mother's voice. Choice D is incorrect as newborns do not see unclearly across a wide range of distances; rather, their vision is clearer for nearby objects.

Correct Answer: D

Rationale: Charles Darwin's theory of evolution emphasized natural selection and survival of the fittest. Natural selection is the process by which organisms with traits that help them survive and reproduce in their environment are more likely to pass on these traits to their offspring. Survival of the fittest refers to the idea that the organisms best adapted to their environment are more likely to survive and reproduce, leading to the gradual evolution of species over time. Both concepts are central to Darwin's theory of evolution. Choices A, B, and C are incorrect as they do not accurately reflect the key principles highlighted by Darwin in his theory of evolution.

Correct Answer: B

Rationale: A sequential design permits researchers to check if cohort effects are operating. This design involves combining cross-sectional and longitudinal research, allowing for the comparison of different cohorts at different ages. By using this approach, researchers can determine if developmental changes observed are due to age or generation-specific factors. Therefore, a sequential design is valuable in addressing the potential influence of cohort effects on developmental outcomes. Choices A, C, and D are incorrect because a sequential design does not neglect diversity in developmental outcomes, is not necessarily less efficient than a longitudinal design, and can make both cross-sectional and longitudinal comparisons.

Correct Answer: A

Rationale: Anesthetics, such as epidurals, are a strong type of painkiller used in labor and delivery that block sensation. They work by numbing the nerves in the lower part of the spine, providing pain relief during childbirth. Choice B, Analgesics, are pain relievers that reduce pain without causing loss of consciousness, but they are not as strong as anesthetics for labor pain. Choice C, Anti-inflammatories, are medications that reduce inflammation and do not directly block sensation like anesthetics. Choice D, Folic acids, are a type of B vitamin crucial for cell growth and metabolism, not used as painkillers in labor and delivery.