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Showing posts from December, 2006

validity

Definition:Validity is the strength of our conclusions, inferences or propositions. More formally, Cook and Campbell (1979) define it as the "best available approximation to the truth or falsity of a given inference, proposition or conclusion." In short, were we right? Let's look at a simple example. Say we are studying the effect of strict attendance policies on class participation. In our case, we saw that class participation did increase after the policy was established. Each type of validity would highlight a different aspect of the relationship between our treatment (strict attendance policy) and our observed outcome (increased class participation). Types of Validity: There are four types of validity commonly examined in social research. 1. Conclusion validity asks is there a relationship between the program and the observed outcome? Or, in our example, is there a connection between the attendance policy and the increased participation we saw? 2. Internal Validity as

BMDP

BMDP 3D (t-test) /INPUT FILE = 'IEA.BMDP'. CODE=X. /VARIABLE USE = SEX, KNOWLEDGE TO MENTALPR. /TWOGROUP VAR = KNOWLEDGE TO MENTALPR. GROUPING = SEX. CORRELATION. /PRINT LEVEL=BRIEF. /END ======== 2-way ANOVA /PROBLEM TITLE = 'Two-way anova. 2V'. /INPUT FILE = 'iea.bmdp'. CODE IS X. /DESIGN DEPENDENT IS MENTALPR. GROUPING ARE SEX, LIKESC. INCLUDE ARE 1, 2, 12. /PRINT LEVEL=BRIEF. LINE = 80. /END ============ Regression /PROBLEM TITLE IS 'Regressioanalyysiä (1R)'. /INPUT FILE IS 'IEA.BMDP'. CODE IS X. /VAR USE = LIKESC TO MENTALPR. /REGRESS DEPENDENT = KNOWLEDGE. INDEPENDENT = LIKESC, APPLICAT, MENTALPR, COMPREHEN. /PRINT DATA. CORR. LEVEL=MIN. /PLOT RESIDUAL. NORMAL. VAR=COMPREHEN. /END ====================== Factor analysis /PROBLEM TITLE = '4M : FAKTORIANALYYSI, PÄÄAKSELIMENETELMÄ, VARIMAX-ROTAATIO'. /INPUT FILE = 'IEA.BMDP'. CODE = X. /VARIABLE USE= SEX TO MENTALPR. /FACTOR METHOD IS PFA. NUMBER = 3. /ROTATE METHOD IS VMAX. /PR

Receiving Memento

On 24th September, Phoebus house in association with All India Seishinkai Shito-Ryu karate-do Federation (24pgs-N) gave me memento for invaluable guidance to them.

How did I design the seminar ?

After success of my seminar on schedule design, I like to share some of my thoughts. Just after thinking of the seminar, I started reading on the topic and found few areas are highly overlooked in the PG level of psychology and education. These areas are non response and scaling dissimilarity in schedule. Next, I met Professor B.K. Sinha for his advice. He appreciated my ideas and told me that he would be present in the seminar in spirit as he would be out of station. With his blessing, I sent my request to the Director for approval. Initially, it returned and then I met our Prof-in-charge for the same. He guided me. Finally it was approved. I prepared one web site for the announcement and sent letters to the universities but I did not get enough response by this postal mail system. Finally, during long procession of CPM, I took taxi and personally met all the HOD of universities and institutes. Gradually, I got very good response from different participants. In the mean time, I searc