Question

Which of the following is the founder of micro-motion film study ?

• A. Gilbreth
• B. Mundel
• C. Gross and Crandall
• D. Heiner and McCullough

Hint:

Associate the term "micro-motion study" and the unit of movement "Therblig" directly with the Gilbreths (Frank and Lillian Gilbreth).
This is a core historical milestone in work simplification.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Time and motion study is a branch of industrial and home management focused on simplifying work, reducing fatigue, and eliminating unnecessary physical movements during tasks.

Step 2: Detailed Explanation:
The founders of micro-motion study are Frank B. Gilbreth and Lillian M. Gilbreth.
They pioneered the use of motion pictures (films) to analyze rapid, minute, and repetitive movements of workers.
Under this method:
- A motion picture camera, along with a specialized micro-chronometer (a highly precise clock), was used to record the worker performing a task.
- This allowed the movements to be broken down and studied frame-by-slide.
- The Gilbreths classified these fundamental hand movements into 17 basic elements called "Therbligs" (which is "Gilbreth" spelled backward with minor changes).
This micro-motion analysis helped designers rearrange workstations, eliminate wasteful steps, and design tasks to minimize physical strain.
In contrast:
- Marvin Mundel is famous for formulating the "Classes of Change" in work simplification.
- Gross and Crandall, as well as Heiner and McCullough, are prominent authors and researchers who applied these industrial work-simplification concepts specifically to home management and kitchen design.

Step 3: Final Answer:
Gilbreth is the founder of micro-motion film study.