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In{{Short general '''go/no go''' testing refers to adescription|A pass/fail test (or check) principle using two boundary conditions or a [[binary classification]].}}

{{original research|date=December 2012}}

{{unreferenced|date=December 2012}}

In general '''go/no go''' testing refers to a pass/fail test (or check) principle using two boundary conditions or a [[binary classification]].

The test is passed only when the ''Go'' condition is met and also the ''No go'' condition fails.

A '''go/no-go''' test is a two-step verification process that uses two boundary conditions, or a [[binary classification]]. The test is passed only when the ''go'' condition has been met and also the ''no-go'' condition has failed.

The test gives no information as to the degree of conformance to, or deviation from the boundary conditions.

These tests can be used for [[statistical process control]] purposes. There are specific SPC tools that use parameter based measurements (e.g., P-charts) for determining the stability of a process.

The test gives no information as to the degree of conformance to, or deviation from the boundary conditions. These tests can be used for [[statistical process control]] purposes. There are specific SPC tools that use parameter based measurements (e.g., P-charts) for determining the stability of a process.

It has uses in engineering, psychology, military, and manufacturing. For example, a rocket [[launch status check]] involves a go/no-go test.

== Uses ==

=== Engineering ===

In [[engineering]] the test is traditionally used only to check noncritical parameters where the manufacturing process is believed to be stable and well controlled, and the [[tolerance (engineering)|tolerance]]s are wide compared to the [[frequency distribution|distribution]] of the parameter.

For example, the preceding checks[[launch status check]]s before a [[spaceSpace shuttleShuttle]] liftoff havehad the [[flight controller]] performingperform a go/no -go check on each of the vehicle's critical systems.

=== Psychology ===

In [[psychology]], Gogo/Nono-go teststest, aredeveloped by [[neuropsychologist]] [[Alexander Luria]] in 1940-50s is used to measure a participant's capacity for switching between several types of behavioural response ("plasticity") and control of adequacy of response (impulse control and sustained attention). Since the work of [[attentionAlexander Luria]] andin [[neuropsychology]], such response controlis linked to the cortical [[frontal lobes]].

For example, a go/no-go test that requires a participant to perform an action given certain stimuli (e.g., press a button - '''Go''') and also inhibit that action under a different set of stimuli (e.g., not press that same button - '''No-Go''').

=== Military ===

In the [[United States Army]], drills and proficiency evaluation rubrics are based on a GOgo/NO GOno-go (pass/fail) system. Evaluations involving numerical scores (such as the Physical[[physical Fitnessfitness Testtest]]) convert raw scores to GOgo/NO GOno-go based on cutoffs defined by the particular performance standard for that area. Within a given skills unit, the rubric often specifies GOgo/NO GOno-go scoring for each individual item or concept a soldier is expected to be trained and evaluated on. Usually, a soldier must score GO"go" (i.e. perform satisfactorily) on all sections of an evaluation in order to advance to the next phase of training, to pass the course, and/or to attain the particular qualification.

== Go/no go gauges ==

=== Manufacturing <span class="anchor" id="Go/no-go gauges"></span> <span class="anchor" id="Go/no go gauges"></span> ===

{{main|Go/no-NoGogo gauge}}

Go/no go gauges are encountered in all types of manufacturing.<ref>http://books.google.com/books?id=iD5IAAAAIAAJ&pg=PA78</ref>

[[File:Go & No-Go gauge.jpg|thumb|Go and no-go gauges]]

They may measure a physical dimension, e.g. (50 ±0.01mm), or a value such as the value of a [[Resistor#Preferred values|resistor]] (100Ω ([[Ohm (unit)|ohms]]) ±1%).

Go/no-go gauges are encountered in all types of manufacturing.<ref>{{cite book | url=https://archive.org/details/in.ernet.dli.2015.212228 | page=[https://archive.org/details/in.ernet.dli.2015.212228/page/n101 78] | title=Machine Tool Operation| publisher=McGraw-Hill book Company, Incorporated | last1=Burghardt| first1=Henry D.| year=1919}}</ref>

They may measure a physical dimension, e.g. (50 ±&nbsp;0.01mm01&nbsp;mm), or a value such as the value of a [[Resistor#Preferred values|resistor]] (100Ω100&nbsp;Ω ([[Ohm (unit)|ohms]]) ±&nbsp;1%).

A typical example is a [[plug gauge]].<ref>{{cite book|last=Hoffman|first=Edward G.|title=Fundamentals of Tool Design|year=1985|publisher=Society of Manufacturing Engineers (SME) Publications/Marketing Division|___location=Dearborn|isbn=0-87263-134-6|pages=499–502}}</ref>

A typical gauge used when making [[tennis ball]]s would have two holes, one slightly larger than the other. A manufactured object passes the go/no go test if it goes through the large hole but does not go through the smaller hole; the object fails if it passes through the smaller hole, or does not pass through the large hole.

==See also==

*[[Shock detector]]

*[[Gauge block]]

*[[Qualitative property]]

*[[Shock detector]]

*[[Litmus test (politics)]]

*[[Evaluation of binary classifiers]]

*[[Confusion matrix]]

==References==

<references />

==External links==

== External links ==

* [https://tstbl.co/891-623 An online version of go/no-go test]

{{DEFAULTSORT:Go No Go}}

[[Category:Quality control]]