**Problem:** Psychologists have discovered that individuals often hesitate to deliver unpleasant news to their peers, a phenomenon dubbed the "MUM effect." To explore its underlying causes, university undergraduates took part in an experiment. Participants were tasked with administering an IQ test and providing supposed scores to another participant, who was actually an actor collaborating with the researchers.**Experimental Details:** - **Factors Manipulated:** The experiment included two factors: 1. **Subject Visibility:** The score-giver's visibility to the test taker (either visible or not). 2. **Test Taker Success:** Whether the score was among the top 20% or bottom 20%.- **Experimental Conditions:** With two levels for each factor, this resulted in a 2 x 2 factorial design, totaling four conditions. - **Assignment and Measurement:** Ten participants were randomly placed in each experimental condition. The time taken from finishing the test to delivering the percentile score (latency to feedback) was recorded.**Question:** What type of experimental design was employed in this study?**Options:**- ○ 2 x 2 factorial design with 10 replications- ○ 4 x 20 factorial design with no replications- ○ Completely randomized design with four treatments- ○ Randomized block design with four treatments and 10 blocksThis exercise involves selecting the appropriate experimental design used in the study.

The correct option is A i. e 2* 2 factorial design with 10 replications

Solve the problem. Psychologists have found that people are generally reluctant to transmit bad news to their peers. This phenomenon has been named the "MUM effect." To investigate the cause of the MUM effect, undergraduates at a university participated in an experiment. Each subject was asked to administer an IQ test to another student and then provide the test taker with his or her percentile score. (Unknown to the subject, the test taker was a bogus student who was working with the researchers.) The experimenters manipulated two factors, subject visibility and success of test taker, each at two levels. Subject visibility was either visible or not visible to the test taker. Success of test taker was either top 20% or bottom 20%. Ten subjects were randomly assigned to each of the 2 x 2 = 4 experimental conditions. Then the time (in seconds) between the end of the test and the delivery of the percentile score from the subject to the test taker was measured. (This %3D variable is called the latency to feedback.) What type of experimental design was employed in this study? O 2 x 2 factorial design with 10 replications O 4x 20 factorial design with no replications O completely randomized design with four treatments O randomized block design with four treatments and 10 blocks

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P