IEC 33003-2015 pdf free download – Information technology — Process assessment — Requirements for process measurement frameworks
4 Requirements for process measurement frameworks
This clause defines the requirements for developing process measurement frameworks.Guidance in thisInternational Standard is limited to providing a better understanding of these requirements.Figure A.1provides a mapping of the relationships between some terms used in this Clause.
NOTE Guidance on achieving conformance to these requirements, including examples and methods,will beprovidedin aguide for constructingprocessmeasurementframeworksto be developedaspartof theset ofStandards.
4.1Conceptualization
4.1.1 Requirements
a) A measurement framework shall identify and address a single process quality characteristic;
b) A process quality characteristic in a process measurement framework shall be defined on the basis
of a multidimensional construct;
A process quality characteristic in a process measurement framework shall be defined as a set of
process attributes;
d) Each process attribute shall define a property of the process quality characteristic;
e)Each process attribute that is not directly measurable shall be considered as a construct;
f) Process attributes in a process measurement framework shall be defined as either reflective or formative.
g) The measurement framework shall document the policies and assumptions underlying its use and application;
4.1.2 Guidance
The process of identifying and clarifying concepts is called conceptualization. A concept is an ideaor image that unites phenomena of interest (e.g., traits, behaviour traits) under a single term. lt is asummarizing device to replace a list of specific traits.Most process quality characteristics (e.g., processcapability) are not observable but are theoretical concepts called constructs.
The composite measures (e.g, process capability level) used in process measurement frameworks aredefined on the basis of a construct composed of process attributes.A measurement framework may bestructured into a series of levels of achievement.
When a process attribute is not directly measurable, it may also be defined as a construct. The set ofprocess attributes for any construct may be either reflective or formative.
Participation of experts and stakeholders can increase the validity of the process quality characteristicand its process attributes; aspects of validity are discussed in C.3.
A multidimensional construct can be depicted with a path diagram including a set of dimensions andtheir relationships.Use of a path diagram improves the understandability of model scope and structures.4.2Construct definition
4.2.1 Requirements
a)The construct definition shall define the meaning of the process quality characteristic and its process attributes in a process measurement framework;
b)The construct definition shall clarify the specification of the process quality characteristic and its process attributes as  dimensions;
c)The construct definition shall provide a guide for the operationalization of the process quality characteristic and its process attributes;
d) The construct definition shall state the scales of composite measures such as categorical (e.g., a series of ordinal values such as capability level) or numeric;
e) At least one of the process attributes shall comprise the achievement of the defined process purpose and process outcomes for the process; this is termed the process performance attribute;
4.2.2Guidance
Although a process quality characteristic or process attribute should convey an intuitive understandingof what it represents, interpretation may vary according to the observer. Thus, a definition is requiredto explain and provide the meaning of a construct.This is called the construct definition.
Clarification of a construct implies that for example the definition of the process quality characteristicas specified super-ordinate fully covers all of process attributes on the basis of construct specification,where process attributes as sub-ordinates are its distinctdimensions.A latent variable can be assigned to aunidimensional construct in the model.Statistical methods related to dimensionality are introduced in C.1.
4.3Operationalization
4.3.1 Requirements
a) All process attributes shall be defined according to their construct specification;b) Achievement of process attributes shall be verifiable through objective evidence.
4.3.2 Guidance
When a process attribute is directly observable through formal assessments self-reports, surveys(including questionnaires and interviews), observations, or other empirical means, it is a base measurethat is functionally independent of other measures. lf a process attribute is measured with its severalsub-constructs or measures, it can be considered as a construct.Four or more base measures arerecommended to measure a construct and perform a set of statistical tests (including model validationand construct specifications) in reflective specification.BS ISO-IEC 33003 pdf download.