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What are the researchers at the University of Chicago studying

[填空题]According to researchers, what factor or factors affect cognitive aging

[单项选择]Researchers at the University of California-Berkeley are challenging our long-held belief that humans are hard-wired to be selfish. Darwin’s theory of evolution by natural selection was misinterpreted by his male popularizers, the researchers say. Rather than "every man for himself", Darwin believed that humans are successful as a species precisely because of our nurturing, selfless and compassionate traits.
Why has it taken so long for Darwin’s central revelation to be properly interpreted "We’ve had too many men in social science," Berkeley psychology professor Dacher Keltner told me in an interview. "Female scientists acknowledge that ’fight or flight’ is part of human nature, but so is caring for people." This is no touchy-feely feminist theory. Hard science is showing how the human capacity to care is wired into our brains and nervous systems.
In my book Passages in Caregiving, I urge women who assume the whole responsibility for taking care of an elderly parent or chron
A. humans are born to be selfish
B. selfless makes us a successful species
C. fight is not part of human nature
D. care is related to our nervous system

[单项选择]Researchers at the University of Toronto have taken important steps toward producing a profile of an abusive parent. Prof. Gary Walters and doctoral student Lynn Oldershaw of the Department of Psychology have developed a system to characterize parents who physically abuse their children. This could ultimately allow social service professionals to identify parents in child abuse. Over the last five years, Walters and Oldershaw, in collaboration with Darlene Hall of the West End Creche, have examined over 100 mothers and their three-to-six-year-old children who have been physically abused. In the laboratory, the mother and child spend 30 minutes in structured activities such as playing, eating and cleaning-up. The family interaction is videotaped and later analyzed.
The researchers have developed a system, which allows them to record the effectiveness of parenting skills. They are particularly interested in disciplinary strategies because abuse most commonly occurs when the parent
A. Therapy tailored for the individual needs of the abusive parents.
B. Interaction between mother and child.
C. The mother’s parenting skills.
D. Parents’ disciplinary strategies.

[单项选择]Researchers at the University of Florida and at the University of New Mexico
A. receive funds from the same source.
B. are using the same techniques.
C. are employed by commercial companies.
D. are in opposition to each other.

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Researchers at the University of Arizona, led by Teresa Cummins, conducted an exploratory study on the online learning modules, designed to supplement hands-on classes taught by local experts and supported by an overview text, to help users increase their understanding of key concepts in the Arizona Master Watershed Steward program. They also sought to determine whether program participants would use the non-compulsory modules.
Their evaluation revealed that module users increased their understanding of key watershed concepts; participants in the evaluation demonstrated a 30 percent increase in content knowledge following module use. Additionally, 70 percent of participants retained this knowledge through a two-month follow-up test.
A follow-up survey showed that approximately half of the participants returned to the online modules on their own; several of these users returned several times and spent multiple hours per session. Comments from the follow-up survey s
A. users of the online modules want to learn some practical skills
B. teachers can teach program participants practical skills in classroom
C. some participants may consider learning in traditional classrooms better
D. learners prefer to select lectures by themselves on the internet