Poverty in India

What is Poverty?
According to the World Bank (2000), “poverty is pronounced deprivation in wellbeing.” Well-being is defined as the command over commodities in general, so people are better off if they have a greater command over resources. The main focus is on whether households or individuals have enough resources to meet their needs. Typically, poverty is then measured by comparing individuals’ income or consumption with some defined threshold below which they are considered to be poor. This is the most conventional view—poverty is seen largely in monetary terms—and is the starting point for most analyses of poverty.
Perhaps the broadest approach to well-being is the one articulated by Amartya Sen (1987), who argues that well-being comes from a capability to function in society. Thus, poverty arises when people lack key capabilities, and so have inadequate income or education, or poor health, or insecurity, or low self-confidence, or a sense of powerlessness, or the absence of rights such as freedom of speech.
Why should poverty be measured?
There are four reasons to measure poverty:
• To keep poor people on the agenda
• To be able to identify poor people and so to be able to target appropriate interventions
• To monitor and evaluate projects and policy interventions geared to poor people
• To evaluate the effectiveness of institutions whose goal is to help poor people.
What are the aggregate measures of poverty?
A number of aggregate measures of poverty can be computed.
Headcount Index
By far, the most widely used measure is the headcount index, which simply measures the proportion of the population that is counted as poor, often denoted by P0. Formally,
4
where Np is the number of poor and N is the total population (or sample). If 60 people are poor in a survey that samples 300 people, then P0 = 60/300 = 0.2 = 20 percent.

The greatest virtues of the headcount index are that it is simple to construct and easy to understand. These are important qualities. However, the measure has at least three weaknesses:
First, the headcount index does not take the intensity of poverty into account.
Second, the headcount index does not indicate how poor the poor are, and hence does not change if people below the poverty line become poorer.
Third, the poverty estimates should be calculated for individuals, not households.

Poverty Gap Index
A moderately popular measure of poverty is the poverty gap index, which adds up the extent to which individuals on average fall below the poverty line, and expresses it as a percentage of the poverty line.

Sen Index
Sen (1976) proposed an index that seeks to combine the effects of the number of poor, the depth of their poverty, and the distribution of poverty within the group.

What is poverty line?
The first step in estimating poverty is to define and quantify a poverty line. The idea of poverty line was first mooted by the Indian Labour Conference in 1957. The poverty line in India was quantified for the first time in 1962 by a Working Group of the Planning Commission in terms of a minimum requirement (food and nonfood) of individuals for healthy living. The money value of the minimum requirement was set as per capita consumption expenditure of Rs.20 per month at 1960-1961 prices and was termed as the poverty line.
The Task Force on Projection of Minimum Needs and Effective Consumption Demand constituted by the Planning Commission in 1979 defined the poverty line as per capita consumption expenditure level, which meets the average per capita daily calorie requirement of 2400 kcal per capita per day in rural areas and 2100 kcal per capita per day in urban areas along with a minimum of nonfood expenditure. It used the age-sex-activity specific calorie allowances recommended by the Nutrition Expert Group (1968) to estimate the average daily per capita requirement for rural and urban areas using the age-sex-occupational structure of their respective population.
The Task Force used the 28th Round (1973-1974) National Sample Survey (NSS) data on household consumption both in quantitative and value terms in order to compute the monetary equivalent of these calorie norms. Based on the observed consumer behavior in 1973-1974 it was estimated that, on average, consumer expenditure of Rs. 49.09 per capita per month meets the calorie requirement of 2400 kcal per capita per day in rural areas, and Rs. 56.64 per capita per month with an intake of 2100 kcal per capita per day in urban areas. These poverty lines expressed in terms of per capita consumption expenditure conform to a consumption basket, which satisfies the above calorie norm and meets a minimum of nonfood requirements, such as clothing, shelter, transport, etc. Thus, the concept of poverty line used here was partly normative and partly behavioral.
The poverty lines for later years were estimated by updating the 1973-1974 poverty line initially by the Wholesale Price Index (WPI). The use of WPI became controversial as it comprised a range of items (about half of its weight) that are not meant for private consumption at all. Besides, consumers buy goods at retail and not at wholesale prices. The Study Group on Estimation of Poverty Line, constituted by the Planning Commission during the Seventh Five Year Plan (1985-1990), recommended use of private consumption deflator of the CSO to update the 1973-1974 poverty lines for later years.
The same poverty line defined at national level (separately for rural and urban areas) was used in all the States/Union Territories (UTs).
The Task Force’s methodology for quantifying poverty lines was regarded by some as inappropriate and even inadequate in giving a representative picture of the incidence of poverty in India. The main points of the criticism, insofar as the poverty line was concerned, included:
(i) choice of deflators to represent price changes in the poverty line;
(ii) application of the same poverty line in all the states, which imply the absence of price differentials across the states;
(iii) use of a fixed consumption basket over time; and
(iv) uniform consumption basket for all the states.
The Planning Commission in September 1989 constituted the Expert Group on Estimation of Proportion and Number of Poor to examine the methodology used for estimation of poverty and “re-define the poverty line, if necessary.”
The Expert Group did not find it necessary to redefine the poverty line. It accepted the Task Force poverty lines, which were available in rural and urban areas at the national level. However, given interstate variation in prices, the Expert Group disaggregated these national level poverty lines of the Task Force into state-specific poverty lines using state-specific price indices and interstate price differential. The important points of departure between the Expert Group and the Task Force methodology insofar as the poverty line was concerned were:
(i) The Expert Group used state-specific poverty lines against a national poverty line for rural and urban areas.
(ii) The Expert Group suggested use of state-specific cost of living indices for estimating and updating the poverty line separately for rural and urban areas. The Task Force estimates were based on one national index, which is same for all the states and also for rural and urban areas. The Expert Group methodology used state-specific Consumer Price Index of Agricultural Labourers (CPIAL) for estimating and updating the rural poverty line and the simple average of the Consumer Price Index of Industrial Workers (CPIIW) and Consumer Price Index of Urban Non-manual Employees (CPIUNM) for estimating and updating the urban poverty line.
It should be noted that the Planning Commission decided to modify slightly the Expert Group
method for poverty estimation in the urban areas. It uses only the Consumer Price Index of Industrial
Workers (CPIIW) for estimating and updating the urban poverty lines.
The estimation of poverty lines by the Expert Group method as used in the Planning Commission is as follows:
2. Rural Poverty Lines
The Expert Group disaggregated the national rural poverty line of Task Force (which is monthly per capita consumer expenditure of Rs. 49.09 in 1973-1974) into state-specific poverty lines using indices of interstate price differential measured by Fisher’s Index. These state-specific poverty lines of 1973-1974 are updated for later years using state-specific price indices especially constructed by averaging the Consumer Price Index of Agricultural Labourers (CPIAL) of (a) food, (b) fuel and light, (c) clothing and footwear, and (d) miscellaneous items with their respective weights in the consumption basket of the poor in 1973-1974 at the national level.
2 The Expert Group submitted its Report in July 1993. The Government has adopted the Expert Group methodology for poverty estimation since March 1997 as the basis for computing the official estimates of poverty in India.
3. Urban Poverty Lines
The Expert Group disaggregated the national urban poverty line of the Task Force (which is monthly per capita consumer expenditure of Rs. 56.64 in 1973-1974) into state-specific poverty lines using indices of interstate price differential measured by Fisher’s Index. These state-specific poverty lines of 1973-1974 are updated for later years using especially constructed state-specific price indices by averaging the Consumer Price Index (CPI) of Industrial Workers, of (a) food; (b) fuel and light; (c) housing; (d) clothing, bedding, and footwear; and (e) miscellaneous with their respective weights in the consumption basket of the poor at national level in 1973-1974. The commodity composition of the basket of the persons around the poverty line in 1973- 1974 at national level in rural and urban areas is as follows:
4. National Poverty Lines
The Expert Group has estimated state-specific poverty lines. It does not specifically estimate the national level poverty lines. The national poverty lines are worked out from the national level expenditure distribution obtained from the NSS data on consumer expenditure and the national level poverty ratio. The national level poverty ratio, on the other hand, is estimated as a weighted average of state-wise poverty ratios. Hence, the estimate of national level poverty line in the Expert Group method is implicit. below.
5. The Poverty Ratio
With the poverty lines quantified, the Expert Group estimated the percentage of people whose consumption expenditures fell below the poverty line, also known as the poverty ratio, in rural and urban areas for the same years. Between 1973-1974 and 1993-1994, the poverty ratio fell by about one percentage point annually. The absolute decline of the poverty ratio during this period was greater in rural (19.1 percentage points) than in urban areas (16.6 percentage points), while the rate of decline remained the same (2.1 percent per year) for both areas. The rate of decline was much faster during the