Psych 1301 Exam 1 Cohn questions with correct answers

Which of the following is a good research hypothesis? CORRECT ANSWER Aggressive behavior increases as exposure to violent video games increases What is the purpose of random assignment? CORRECT ANSWER Random assignment reduces systematic bias between participants in the experimental and control groups in a search study Robert Rosenthal administered a 'Blooming IQ test' to elementary school children. Children who were identified as 'bloomers' showed significantly greater gains in IQ scores at the end of the school year compared to children who were not identified as 'bloomers'. These findings were subject to which experimental confound? CORRECT ANSWER Expectancy effects I want to study the effectiveness of a new anti-depressant medication. I recruit 100 depressed individuals into my study. 50 participants receive the new anti-depressant medication and 50 participants receive a placebo. Two weeks later my research assistants assessed the depression level of each participant. Neither the participants nor the research assistants knew which participants received the anti-depressant medication. This study illustrates a CORRECT ANSWER Double blind research design Hundreds of studies have investigated the impact of T.V. violence on aggressive behavior in children. Results of the studies support the conclusion that CORRECT ANSWER Viewing T.V. violence does increase aggressive behavior in children An investigation tested the following hypothesis: "As age increases, intellectually ability decreases". The investigator recruited 50 males and 50 females to participate in the study. Participants