Nokea
In an experimental study examining whether children who are read to more often score higher on vocabulary tests in first grade, the independent variable would be the __________.
- A. frequency of read-alouds
- B. type of books parents read
- C. child's vocabulary score
- D. difficulty of vocabulary words
Correct Answer: A
Rationale: In an experimental study, the independent variable is the factor being manipulated or controlled by the researcher. In this case, the frequency of read-alouds is the variable that researchers would intentionally change or vary to see its effect on the dependent variable, which is the children's vocabulary scores. The other options (B. type of books parents read, C. child's vocabulary score, and D. difficulty of vocabulary words) are not the independent variable in this study as they are either irrelevant or are the outcome being measured.
You may also like to solve these questions
During her labor, Renee asks for a mild dose of painkillers to help her relax. Renee will probably be given __________.
- A. an anesthetic
- B. an analgesic
- C. folic acid
- D. an anti-inflammatory medication
Correct Answer: B
Rationale: Renee will likely be given an analgesic during her labor to help manage her pain and provide relaxation. Analgesics are painkillers that can help reduce pain without causing loss of consciousness, making them suitable for labor pain management. Examples of analgesics commonly used during labor include opioids like morphine and non-opioids like acetaminophen.
Cindy tells her daughter, "I know you can do a good job on that homework"‚ because she believes that if she encourages persistence, her daughter will start to view herself as hardworking and high-achieving. Cindy is applying the __________ approach.
- A. behavior modification
- B. psychosocial
- C. cognitive-developmental
- D. social-cognitive
Correct Answer: D
Rationale: Cindy is applying the social-cognitive approach by encouraging her daughter to believe in her own abilities and persist in her efforts. This approach emphasizes the importance of social influences and cognitive processes in shaping behavior. By providing positive reinforcement and fostering a belief in her daughter's capabilities, Cindy is helping to shape her daughter's self-perception and motivation to achieve success.
You can tell her that healthy women in their thirties have __________ as those in their twenties.
- A. lower rates of miscarriage
- B. higher rates of pregnancy complications
- C. lower rates of pregnancy complications
- D. about the same rates of pregnancy complications
Correct Answer: D
Rationale: Healthy women in their thirties typically have about the same rates of pregnancy complications as those in their twenties. While it is true that the risk of fertility issues and certain pregnancy complications may increase with age, generally speaking, women in their thirties who are healthy and do not have preexisting conditions do not necessarily experience higher rates of pregnancy complications compared to women in their twenties.
Dr. Anodyne found a correlation of +.49 between illegal drug use and levels of adolescent delinquency. This correlation is __________ and __________.
- A. moderate; positive
- B. low; positive
- C. high; negative
- D. low; negative
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
During the period of the embryo, the __________ becomes the __________.
- A. mesoderm; nervous system, lungs, internal organs, and skin
- B. chorion; endocrine system, muscles, placenta, and skeleton
- C. ectoderm; circulatory system, skin, skeleton, and internal organs
- D. endoderm; digestive system, lungs, urinary tract, and glands
Correct Answer: D
Rationale: During the period of the embryo, the endoderm becomes the digestive system, lungs, urinary tract, and glands. The endoderm is one of the primary germ layers that give rise to various internal organs in the developing embryo. It plays a crucial role in the formation of organs such as the digestive system, respiratory system, and glandular structures.