The document discusses research methods and measurement in psychology. It describes the key aspects of research as identifying a problem, formulating a hypothesis, collecting and analyzing data, and reaching conclusions. It then explains the different levels of measurement in research as nominal, ordinal, interval, and ratio scales. Nominal measurement uses numbers for naming and classification, while ordinal adds the concept of ordering or ranking. Interval scales have equal numerical distances that represent equal differences in the attribute being measured. Ratio scales have all the properties of lower scales and also feature an absolute zero point, allowing ratios to be meaningfully compared.

1. Presented By :ANJU GAUTAM
Psychologist
anju gautam (psychologist)

2. Research is systematic method consisting :
 Identification of the problem
Formulating a hypothesis
Collecting facts and data
Analysing the facts
Reaching to certain conclusion towards the concerned problem.
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3.  Research methods are used for conduction of research.
 The methods are used by researchers in performing research
operations.
 It relies on empirical evidence.
 It utilizes relevant concepts.
 It consists of statistical techniques.
 It evaluates the accuracy of the result obtained.
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4. According to Tyler (1963)
“ Measurement is assignment of numerals, according to
rules”.
According to Nunnally (1970)
“Measurement consists of rules for assigning numbers to
objects in such a way as to represent quantities of attributes”.
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5. Nominal
scale
Ordinal
scale
Interval
or equal
interval
Scale
Ratio
Scale
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6.  Nominal scale is the lowest level of measurement.
 In nominal measurement numbers are used to name, identify and
classify person, objects or groups.
 In this scale of measurement two groups are never equivalent .
 There is no order of magnitude to the categories.
 Example : A sample of persons being studied may be classified as :
-Based on religion ( hindu , muslim,sikh etc)
-On the basis of sex
-Rural or Urban
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7.  Addition , subtraction , multiplication and division are not
possible.
 It is most elementary and simple.
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8.  The second level of measurement .
 Ordinal means “order”.
 Rank orders represents ordinal scales.
 Frequently used in research relating to qualitative phenomena.
 Ordinal measures have no absolute value and the real differences
between adjacent rank may not be equal.
 Example : - Greater than or less than
- Rank first second third
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9.  The drawback of ordinal measurement is that ordinal
measures are not absolute quantities, nor do they convey that
the distance between the different rank value is equal.
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10.  The third level of measurement.
 It includes all the characteristics of the nominal and ordinal
scales of measurement.
 It is numerically equal distances on the scale indicate equal
distances in the properties of the objects being measured.
 The units of measurement is constant and equal.
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11.  It is the highest level of measurement.
 It has all the properties of nominal, ordinal and interval scales of
measurement.
 It has an absolute zero or true zero point.
 The ration scale is that the ratio of any two numbers is
independently of the unit of measurement. It can meaningfully
equated.
 Example : 16:28 is equal to 4:7
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12.  An absolute zero is said to exist when nothing of property
being measured exists.
 For example : if a psychologist wants to asses shyness on a
scale from 0 through 5, it is very hard to define what it means
for a person to have absolutely no shyness.
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13. Types of scale Magnitude Equal interval Absolute zero
Nominal No No No
Ordinal Yes No No
Interval Yes Yes No
Ratio Yes Yes Yes
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14. o Singh .A.K. (2008). Tests , Measurements and Research Methods in Behavioural
Sciences.( 6th Ed). Patna: Bharati Bhawan Publisher. Pg 3- Pg 11
o Kothari.C.R. (1990). Research Methodology : Methods and Techniques. (2nd ED).
Jaipur: New Age International Publishers. Pg 1-pg 9
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15. Thankyou
anju gautam