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The student welfare office was interested in trying to enhance students' exam performance by investigating the effects of various interventions.They took five groups of students before their statistics exams and gave them one of five interventions: (1) a control group just sat in a room contemplating the task ahead (Control) ; (2) the second group had a yoga class to relax them (Yoga) ; (3) the third group were told they would get monetary rewards contingent upon the grade they received in the exam (Bribes) ; (4) the fourth group were given beta-blockers to calm their nerves (Beta-Blockers) ; and (5) the fifth group were encouraged to sit around winding each other up about how much revision they had/hadn't done (You're all going to fail) .The student welfare office made four predictions: (1) all interventions should be different from the control; (2) yoga,bribery and beta-blockers should lead to higher exam scores than panic; (3) yoga and bribery should have different effects than the beta-blocker drugs; and (4) yoga and bribery should also differ.Which of the following planned contrasts (with the appropriate group codings) are correct to test these hypotheses?
Wisdom
Expertise in the conduct and meanings of life, characterized by emotional maturity and the ability to show insight and apply it to problems.
Selective Optimization With Compensation
The ability to adapt to changes over time, optimize current functioning, and compensate for losses in order to preserve performance despite declines in fluid abilities.
Cognitive Changes
Alterations in cognitive function, which can include memory, perception, problem-solving, and language, typically due to aging, development, or neurological conditions.
Cardiovascular Disease
A disease marked by high blood pressure, high blood cholesterol, plaque buildup in the arteries, irregular heartbeat, and risk factor for heart attack and stroke.
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