Consumer Behaviour And Demand

Step 1: Understanding the Concept:
This law, proposed by H.H. Gossen, describes a fundamental human psychological behavior regarding satisfaction.
Step 2: Detailed Explanation:
Statement: "The additional benefit which a person derives from a given increase of his stock of a thing diminishes with every increase in the stock that he already has."
Assumptions: The consumption must be continuous, units must be of standard size, and the quality must be identical.
Graphical Representation:
- On the X-axis, we plot the quantity consumed.
- On the Y-axis, we plot Marginal Utility (MU).
- The MU curve slopes downward from left to right.
- Positive MU: Utility is adding to total satisfaction.
- Zero MU (Satiety Point): Total Utility (TU) is maximum; the consumer is fully satisfied.
- Negative MU (Disutility): Consuming further leads to dissatisfaction; TU begins to fall.
Step 3: Final Answer:
The law shows that the first unit of consumption gives the most satisfaction, and subsequent units give less and less, eventually leading to zero and negative utility.

Step 1: Understanding the Concept:
Indifference curve analysis belongs to the "Ordinal Utility" school of thought, which suggests that utility cannot be measured in numbers but can be ranked.
Step 2: Detailed Explanation:
The consumer is "indifferent" between the combinations on the curve because they all yield the same utility.
Key characteristics of an IC:
1. Negative Slope: To get more of one good, the consumer must give up some of the other to keep satisfaction constant.
2. Convex to the Origin: This is due to the Law of Diminishing Marginal Rate of Substitution (MRS).
3. Higher IC = Higher Satisfaction: A curve further to the right represents more goods and thus more utility.
4. Non-Intersecting: Two ICs can never cross because each curve represents a unique, consistent level of satisfaction.
Step 3: Final Answer:
An indifference curve is a graphical representation of different bundles of two commodities that leave the consumer equally well-off.

Step 1: Understanding the Concept:
Utility refers to the satisfaction derived from consumption. The relationship between Total Utility (TU) and Marginal Utility (MU) is central to consumer behavior theory.
Step 2: Detailed Explanation:
1. Marginal Utility (MU) is the addition to Total Utility from consuming one more unit.
2. As long as MU is positive, TU continues to rise.
3. When the consumer reaches the point of complete satisfaction (satiety), the next unit adds nothing to total satisfaction. At this point, MU becomes zero.
4. Because no more utility is being added, TU is at its peak (maximum).
5. If consumption continues, MU becomes negative (disutility), causing TU to decline.
Step 3: Final Answer:
At the point of satiety, Total Utility is at its maximum and Marginal Utility is zero.

Step 1: Understanding the Concept:
Indifference curve analysis is based on the ordinal utility approach.
It assumes that consumers can rank their preferences even if they cannot measure utility in numbers.
Step 2: Detailed Explanation:
Since all points on an indifference curve provide equal satisfaction, the consumer is "indifferent" between them.
Key properties of Indifference Curves (IC):
1. ICs are downward sloping from left to right.
2. ICs are convex to the origin due to the diminishing Marginal Rate of Substitution (MRS).
3. A higher IC represents a higher level of satisfaction.
4. Two ICs can never intersect each other.
Step 3: Final Answer:
Indifference curves are loci of points representing commodity bundles between which a consumer is indifferent because they provide identical utility.