Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Developmental Longitudinal and Cross Sectional Survey:
Suppose, you wish to study the growth and development pattern of children from birth tofive years of age. This is an example of development research. This studycan be done in two ways. One, the researcher can follow a group of new born infants from their birth to five years of age to assess aspects of their growth and development patterns. This is called as longitudinal survey. The second method is a cross sectional survey where the researcher for example takes representative samples fiom the age groups of birth-three months, four-six months, seven, nine months, and so on till the sixteenth month. Both methods have certain advantages and disadvantages. Let us examine them.
In longitudinal survey sequence of events is observed in each subject selected for the study. Data here is more objective as the subjects do not have to recall for reply. The most difficult part of this study is to keep contact with the subjects as the individuals may move out of the place of residence or drop out of the study. This is called as the subject mortality. For this reason a large number of subjects is needed for desired sample size in the end of the study. It takes a long time to know the final results. Many a time cross-sectional study is done in place of longitudinal study. Advantages are that it can be completed in a relatively short time and is relatively less expensive; sample loss is less than longitudinal study; and the results are known early. The disadvantage. is that the method can only consider the present and past and not the future as in longitudinal study. So, trends and patterns over a period of time can not be described.
The case study and retrospective survey (or ex-post facto) are two other methods which are sometimes included as types oi survey method or sometimes are treated separately. However, we are discussing them under survey.
Conflicting Factors: Demand, supply and finance are the three major factors governing collection development. Both demand and supply will be increasing while finance will be a
Circulation Area in library building-library management The stack rooms, issue and return counter and public catalogue constitute the circulation area. Along with the readin
Staff Activity Area of library building -library management Main activities carried out by the professional staff of the library are: Acquisition, Technical Processing (catalo
QUESTION When an investment is made in a fixed interest-bearing instrument, the risk is that the secondary market rate at which these instruments trade will increase, with a re
how do you generate and qualify sales lead
what is an information resource management?
Study carrel -Reader Activity Area of library building -library managenent Study carrels are exclusive areas, located in quieter and undisturbed part of the library, which are
Definition of Library Classification: Having understood the meaning of classification in library science, let us now go through a few well-known definitions of library classif
Q uality assurance Assurance is the process of gaining stakeholders confidence by providing evidence that the quality-related activities are being performed effectively and th
In order to give unique co-extensive representation to each subject in the UoS, the classificationist has to ascertain the various attributes - infinite, turbulently dynamic, conti
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd