Psychological test norms are based on large standardization samples that are representative of the population for which the test is intended. Tests are standardized by administering them to samples stratified on key demographics like age, gender, education level, and geographical region to create a normal distribution of scores. This allows future test takers' raw scores to be converted to percentiles for accurate comparison against the norm group. Regularly updating test norms with new standardization samples is important for interpreting scores.

1. MADE BY –
GIREESHA SHARMA

2. PSYCHOLOGICAL ASSESSMENT
 A psychological assessment can include numerous components
such as norm-referenced psychological tests, informal tests and
surveys, interview information, school or medical records, medical
evaluation and observational data. A psychologist determines what
information to use based on the specific questions being asked. For
example, assessments can be used to determine if a person has a
learning disorder, is competent to stand trial or has a traumatic brain
injury. They can also be used to determine if a person would be a
good manager or how well they may work with a team.
 One common assessment technique, for instance, is a clinical
interview. When a psychologist speaks to a client about his or her
concerns and history, they're able to observe how the client thinks,
reasons and interacts with others. Assessments may also include
interviewing other people who are close to the client, such as
teachers, coworkers or family members. (Such interviews, however,
would only be performed with written consent from the client.)

3. USAGE OF PSYCHOLOGICAL
ASSESSMENT
 Psychological assessment is most often used in the psychiatric,
medical, legal, educational, or psychological clinic settings. The types
of assessments and the purposes for them differ among these
settings.
 In the psychiatric setting, the common needs for assessment are to
determine risks, whether a person should be admitted or discharged,
the location the patients should be held, as well as what therapy the
patient should be receiving. Within this setting, the psychologists need
to be aware of the legal responsibilities that what they can legally do
in each situation.
 Within a medical setting, psychological assessment is used to find a
possible underlying psychological disorder, emotional factors that may
be associated with medical complaints, assessment for
neuropsychological deficit, psychological treatment for chronic pain,
and the treatment of chemical dependency.

5. STANDARDIZATION …
 standardization, ensures that everything is the same for all participants. In the
case of intelligence tests, it means that every test-taker must have the same
circumstances.
 For example, you take an intelligence test that's given to you by Amy, a nice
woman who hands the test over, tells you that you have an hour to take it, and
then walks away. You are left to figure everything out on your own.
 But imagine that your friend takes that same test, but this time it's given by
someone named Rosa. Rosa notices when your friend starts to struggle with a
question, so she gives him a hint. When he really can't get an answer, she lets
him look the answers up online. What if you score the same as your friend?
Does that mean that you are equally adept? No, because you didn't have
standardization. That is, the test you took was harder than your friend's test,
even though it had the same questions, just by virtue of the fact that you didn't
have the same help that he did.
 As you can probably tell, standardization is very important in an intelligence test
and other psychological tests. Making sure that every single person gets the test
under standard conditions ensures that everyone gets a fair shot at the test.

6. STANDARDIZATION IS NOT SAME AS
STANDARDIZING
 There are quality standards and regulations for standardization and test quality.
These are determined by the international psychological associations. This
includes the ITC (International Test Commission), EFPA (European Federation of
Psychologists Association's), test publisher groups like the European Publisher
Group and the nationally recognized certification institutes like the BPS (British
Psychological Society) and COTAN (Commissie Testaangelegenheden
Nederland).
 There are also standards like DIN 33430 “Requirements for procedures and their
use in occupational aptitude appraisals” which provide information on the
currentness of the norms and on the correct interpretation of psychological
testing procedures. considerably more marked in the group of schizophrenia
patients. These impairments could impact adversely on patients’ everyday lives
and on the course of the illness.
 An interesting point that emerged was that patients with depression tend to
underestimate their cognitive abilities, while patients with schizophrenia
overestimate them. More specifically it was noted that people with depression
have problems in the areas of figural memory, working memory and response
inhibition. People with schizophrenia also have deficits on other subdimensions,
including cognitive flexibility, planning and processing speed

7. WHO IS STANDARDIZED…
 Standardization represents particular effort on the part of the test developer. The process
is both cost- and time-intensive. Test developers that have in-house testing options and
can draw upon the appropriate infrastructure have an advantage. It can take between
three and six months before the standardization is completed and the evaluation is
present. In other cases, if there are no in-house testing options available, tests can be
standardized as part of collaborations with clinics, universities, business partners, or other
institutes.
 The project generally lasts much longer depending on how quickly suitable test persons
can be found. “Our search for test persons is done with existing databases of interested
persons, through appeals for test person can be made by attachment, insert, or internet
forums”, reports the head of the SCHUHFRIED Research Center, Alexander Weidinger.
300 potential test persons can be quickly found this way. However, not all persons are
suitable for testing to create a representative sample.
 The prerequisite is that the test person must be psychologically healthy and not under the
influence of drugs or medications. “The particular difficulty in standardization lies in
complying with the census,” says Alexander Weidinger. Students and other groups of
persons with a lot of free time during the day are often interested in making their time
available in the interest of science, in particular when their efforts are compensated with an
allowance for expenses. For the group of professionally employed adults and the healthy
“best age” test subject, however, it is difficult to find suitable test people.

9. SAMPLING…
 In order to assess overall performance, most psychological
tests employ a sample which allows the test makers to create
a normal distribution which can be used for comparison of any
specific future test score.
 Standardization Sample : �a large sample of test takers
who represent the population for which the test is
intended.� This standardization sample is also referred to as
the norm group (or norming group).
 We convert the raw scores of the sample group into
percentiles in order to construct a normal distribution to allow
us to rank future test takers.

10.  Sampling methods for selecting a norming group
 Sample must be representative :� Test children if you are developing a test of children's
IQ;� test adults if you are interested in assessing adult interests.
 The closer the match between your sample and your intended population of test takers,
the more accurate the distribution will be as a ranking guide.
 Simple Random Sampling : every person in the target population has an equal chance of
being in the standardization sample.
 Stratified Sampling : Test developer takes into account all demographic variables which
can accurately describe the population of interest and then selects individual at random,
but proportional to the demographic portrait of the test population. Most accurate way of
developing norm group. Common demographics to stratify :� age, gender, socioeconomic
status, geographic region.
 Cluster Sampling :sampling begins by dividing a geographic region into blocks and then
randomly sampling within those blocks. �More likely than random� sampling to come up
with a representative sample and less time consuming than stratified sampling.

11.  �������������������� Item Sampling
 Often, test developers need to produce more than one
version of a standardized test. This is particularly important
if you believe you will have an individual complete a
psychological test more than once.
 Item sampling refers to the procedure of giving two norm
groups different items from� the same exam. This allows
us to shorten the time it takes to conduct our representative
sampling.

13. WHAT ARE NORMS….
 Norms are a basic requirement and an essential quality feature for psychological
diagnosis. They are a reference system that places the tested person in relation
to other persons, thus making the results interpretable and informative. Tests
without norms are only meaningful if several persons were tested and the results
are compared with each other in ranking order. For most test users, norms are
an absolute requirement.
 This presents great challenges for the test publisher because the development of
a new test, or updating a test, requires great effort. A distinction is made between
two types of norms, the representative norm and the random sample. For a
representative norm sample, at least 300 persons must have been tested and
the minimum limit must be independent of the number of inhabitants in a country.
This norm represents a cross-section of the population (census). This means that
the percentage of men and women in a country are depicted in the norm sample.
Education and age also play a role. Furthermore, additional demographic
aspects can be taken into consideration (e.g., country vs. city, ethnic group
membership, etc.). For random samples, meaning samples that are only
representative of specific groups of people, professions, or patients, smaller
sample sizes of at least 150 people are often required.
 For the good of the norm, however, it is not just the absolute number of the
sample group size that is critical, but even more so the quality of the composition
of the sample, the collection of the data, and the description of the sample.

14. PURPOSE OF NORMS
 A variety of norms can be created for test procedures. Generally they are
the frequently mentioned representative norm samples from which partial
norms for age group, gender, and education can be drawn. Representative
norm samples are country-specific or region-specific because national
borders also often represent linguistic or cultural borders which in turn
indicate differences between persons from different countries, cultures, age
groups, etc. Which norm is to be used depends on the question that is to be
posed. Therefore it is important to know with which groups of people the
comparison will be made during the standardization. For example, it doesn’t
make sense to perform personality tests in Japan with French norms
because different values are valid for many characteristics there.
 In general, the more complex a test is and the more specific the question,
the more important the consideration of sociocultural influences and
therefore also the selection of the right standard. For achievement tests, for
example, a representative norm sample for Austria is a good basis for
general use. If you want to make comparison within a group, it makes sense
to take the norm sample from the group in question.

15.  In human resources psychology, an individual professional group norm is drawn
upon in order to provide a more precise differentiation in personnel selection. For
example, if traffic psychologists want to know whether the driving behavior of a
retiree is consistent with their age, then a senior norm group can be consulted.
But if you want to know whether older drivers display "normal” driving behavior in
comparison to other road users, then the representative norm sample is used in
the testing. Child and adolescent norms have a special significance among
norms. Because children develop especially quickly, the norms for the many age
levels and for each relevant developmental stage must be created. Creating a
representative test group requires a large quantity of test persons, and the
parents’ permission to perform the testing must be present for each test. The
organizational effort to obtain child and adolescent norms is therefore relatively
high.
 UPDATING NORMS….
 Regular updating of test norms is necessary, and we recommend that this be
done every seven to ten years. The reason for this is in the continuous change in
the population and the associated changes to the census. The number, the
composition, and the education level of the public changes. Even the average
intelligence changes. The average IQ test result has increased noticeably since
1950. It is clear that the currentness of the representative norm sample
decreases over the course of the year. If the use of the tests is to remain
meaningful, the norms must be updated. The quality of the test is ultimately
strongly dependent on the norms.

16. DIFFERENCE BETWEEN GROUP NORMS AND LOCAL
NORMS….
 � Sometimes educators are interested how
students performed relative to other students in the
same grade, or other students in adjacent districts.
 ��� For these purposes, test scores will
develop local norms for statistical comparison,
rather than using the group norm supplied with the
test. When scoring is done by computer, local
norms can be easily developed.

17. PSYCHOLOGICAL EVALUATION…
 Psychological evaluation is defined as a way of testing people
about their behavior, personality, and capabilities to draw
conclusions using combinations of techniques. Over the years, it
has developed from unethical methods of locking people up for
tests to the many different strategies seen today. We currently see
evaluation being used in several different settings for multiple
purposes, such as education or legal situations. The purpose
behind many modern psychological evaluations is to try to pinpoint
what is happening in someone's psychological life that may be
inhibiting their ability to behave or feel in more appropriate or
constructive ways. It is the mental equivalent of physical
examination. It is important to use psychological evaluation
properly otherwise violations of the professional ethical code can
occur, resulting in harm to the client and invalid assessment
results.

19. FORMAL AND INFORMAL EVALUATION
 Formal psychological evaluation consists of standardized batteries
of tests and highly structured clinician-run interviews
 while informal evaluation takes on a completely different tone. In
informal evaluation, assessments are based on unstructured, free-
flowing interviews or observations that allow both the patient and
the clinician to guide the content.
 A highly unstructured interview and informal observations provide
key findings about the patient that are both efficient and effective. A
potential issue with an unstructured, informal approach is the
clinician may overlook certain areas of functioning or not notice
them at all Or they might focus too much on presenting complaints.
The highly structured interview, although very precise, can cause
the clinician to make the mistake of focusing a specific answer to a
specific question without considering the response in terms of a
broader scope or life context. They may fail to recognize how the
patient's answers all fit together, they lose the forest through the
trees.

20. USE OF TESTS AND
BATTERIES….
 The benefits to more formal standardized evaluation types such as batteries and
tests are many.
 First, they measure a large number of characteristics simultaneously. These
include personality, cognitive, and/or neuropsychological characteristics.
 Second, these tests provide empirically quantified information. The obvious
benefit to this is that we can more precisely measure patient characteristics as
compared to any kind of structured or unstructured interview.
 Third, all of these tests have a standardized way of being scored and being
administered. Each patient is presented a standardized stimulus that serves as a
benchmark that can be used to determine their characteristics. These types of
tests eliminate any possibility of bias and produce results that could be harmful
to the patient and cause legal and ethical issues.
 Fourth, tests are normed. This means that patients can be assessed not only
based on their comparison to a "normal" individual, but how they compare to the
rest of their peers who may have the same psychological issues that they face.
Normed tests allow the clinician to make a more individualized assessment of
the patient.
 Fifth, standardized tests that we commonly use today are both valid and reliable.
We know what specific score mean, how reliable they are, and how the results
will affect the patient.
 Most clinicians agree that a balanced battery of tests is the most effective way of
helping patients.

21. PSYCHOLOGICAL TEST SCORING..
 Accurate measurement of human behavior and mental processes involves
the use of assessment tools with established validity (the test measures what
it was actually designed to measure) and reliability (the test measures the
trait or ability in a consistent manner and without excessive error).
 Scoring the Exams

 Administrator may be responsible for scoring the exams herself or may mail
them to a service or bring them to a computer grading service.

 Scoring Essay Tests : The most subjective category of scoring, can be
made more rigorous by developing a scoring scheme which lists the
important facts or theories which should have been included.

 The analytic scoring procedure is preferable to the global scoring approach
because it helps to minimize
 Halo effects and leniency error

22.  Other recommendations for scoring Essays
1. Score all answers of a specific essay at one time.
2. Score all answers to a specific essay within one test scoring period.
3. If both writing quality and essay content are to be graded, they should be
assigned separate grades before being combined.
4. Have two readers score each essay, and let the final grade be the
average of the two scores given to a particular essay.
5. Write comments next to the examinee's responses, and correct errors on
their papers.
 Computer Software is now being developed that can grade essays.�
 The Intelligent Essay Assessor. The "Software" learns a specific subject
area by scanning appropriate documents. Then, the software is fed graded
essays to set up the grading standards. Now, ungraded essays can be
interpreted and graded by the Software program.

24. SCORING OBJECTIVE TESTS…
 Hand Graded :� Due to human error, mistakes may occur.� Having two graders
grade exams help to catch 90% of those simple mistakes in grading.
 Machine Scoring : As accurate as the answer code given to the computer.�
 For some psychological tests of personality and/or adjustment, considerable
training is required in order to properly score responses.
 Some testing publishers will only release or sell their products to individuals who
have undergone special training or have a particular degree in a related field.
 Guessing Corrections : Some tests which penalize for wrong answers, do so
because they want to discourage random guessing.�
 Professionals in the testing industry generally agree that correcting for guessing
has very little effect on the ranking and distribution of test scores.

25. TYPES OF SCORING SYSTEM….
 There are many possible ways to depict an individual's score
relative to the normative sample. Such data could be
represented in the form of 1) standard scores, 2) scaled scores,
3) T-scores, or 4) percentile scores. Each reporting method
allows for comparison relative to the normative sample. The
method of reporting selected by an individual psychologist may
vary based on training and personal discretion.
 1. STANDARD SCORES - reflect a traditional method of
descriptive reporting most frequently observed in areas of
intellectual assessment. For example, a standard score of 100
represents precisely average performance, indicating that 50%
of the normative sample scored better than that individual, and
50% scored lower. However, very few individuals obtain such a
precisely average score.

26.  SCALED SCROES - offer a somewhat different
descriptive framework. A scaled score of 10 represents
average (50th percentile) performance with a normal
range between 8 and 12. Scaled scores of 6 or 7
represent low average abilities, with scaled scores of 4
and 5 representing a borderline deficient range. Scaled
scores below 4 represent deficient performance.
 T SCORES - are yet another method of depicting a
person’s score. In this context, a T Score of 50 is
precisely average, with a normal range of roughly 40 to
60. T Scores below 30 (2nd percentile) or above 70
(98th percentile) represent unusually low or high
performance. Many common personality tests use T
Scores to represent the findings.

27.  PERCENTILE SCORES - a score in the 50th percentile
represents precisely average performance with scores
between the 25th and 75th percentile representing the
normal range. Scores below the 2nd percentile and
above the 98th percentile are very unusual, and thus are
traditionally seen as “abnormal.” There is no particular
reason to select one scoring method over another other
than preference of the test developer. Scoring systems
are interchangeable. A T score of 50 means the same as
a Standard Score of 100, which means the same as a
Scaled Score of 10. All are equivalent to a percentile
score of 50. Regardless, these scoring and reporting
methods allow for relatively precise quantification of
behavior and mental processes, and aid in diagnosis by
determining the extent to which a deficiency or
abnormality of behavior might be present.