Barriers to Effective Problem Solving – Part 2

Need help preparing for the Psych/Soc section of the MCAT? MedSchoolCoach expert, Ken Tao, will teach you Part 2 about barriers to effective problem solving. Watch this video to get all the MCAT study tips you need to do well on the psychology section of the exam! Mental Set A mental set is the collection of problem-solving strategies that have worked for a person in the past. Take the Water Jar Problem as an example, where there are three empty water jars that can hold different volumes of fluids. Jar A can hold 37 cups of water, Jar B can hold 12 cups of water, and Jar C can hold five cups of water. The problem’s task involves filling and emptying the jars as many times as necessary to measure out 10 cups of water. The solution is to fill up Jar A with 37 cups of water. This is poured into Jar B, which removes 12 cups of water and leaves 25 cups of water in Jar A. Jar A is then poured into Jar C to remove five cups of water. This is done three times to remove 15 cups of water, leaving 10 cups of water in Jar A. In trial two of the Water Jar Problem, Jar A can hold 43 cups of water, Jar B can hold nine cups of water, and Jar C can hold four cups of water. The goal is to measure out 22 cups of water. When presented with this problem, most people want to try the same solution that worked for trial one of the problems, allowing them to solve trial two faster. If Jar A is filled with 43 cups of water and poured into Jar B, nine cups of water will be removed, leaving 34 cups in Jar A. If Jar A is poured into Jar C three times, it will get rid of 12 total cups of water, resulting in 22 cups in Jar A. Trial three of this problem is solved in the same way, and people solve trial three even quicker than the first two trials. Jar A holds 24 cups of water, Jar B holds four cups of water, and Jar C holds three cups of water. The goal is to measure out 11 cups of water. Jar A is filled with 24 cups of water and poured into Jar B to get rid of four cups of water. The remaining 20 cups of water in Jar A is poured into Jar C three times to get rid of nine total cups of water, resulting in the final goal of 11 cups of water. In trial four of this problem, Jar A can hold 35 cups of water, Jar B can hold 13 cups of water, and Jar C four cups of water with the final goal of having nine cups of water. This is the easiest of the trials. However, after solving the first three trials, most people have a long, difficult time solving this one. This is because they attempt to solve it with the same strategy that worked for the last three trials, filling Jar A with 35 cups of water, pouring it into Jar B to yield 22 cups of water, and then pouring it into Jar C three times. However, this leaves Jar A with 10 cups of water, which is not the goal volume. The answer is simple and involves filling Jar B with 13 cups of water and pouring four cups out into Jar C to end with nine cups of water. Despite this being the simplest trial, mental set causes many to struggle to solve it. Unnecessary Constraints An unnecessary constraint is another barrier to effective problem solving and occurs when individuals assume that there are rules that don’t actually exist. For example, in the previous problem, nine circles need to be connected using four lines. The unnecessary constraint that most people believe is that there is a barrier around the circles that can’t be crossed. With this unnecessary constraint, drawing four lines to connect the nine circles is impossible. However, without this unnecessary constraint, there are several possible solutions, two of which are depicted, demonstrating how problem-solving can be made easier by removing unnecessary constraints. To surpass barriers to effective problem solving, such as mental set and unnecessary constraints, it is necessary to think outside of the box and not be restricted to past strategies or constraints that don’t actually exist. MEDSCHOOLCOACH To watch more MCAT video tutorials like this and have access to study scheduling, progress tracking, flashcard and question bank, download MCAT Prep by MedSchoolCoach IOS Link: https://play.google.com/store/apps/details?id=com.htd.medschoolcoach&hl=en_US Apple Link: https://apps.apple.com/us/app/mcat-prep-by-medschoolcoach/id1503000883 #medschoolcoach #MCATprep #MCATstudytools