Table 36 PKMAP person diagnostic maps

PKMAP diagnostic maps are a means of displaying the responses of a person to the items. They are described in KIDMAP: Person-by-Item Interaction Mapping. The Table Heading is only shown at the start of Table 36, not for each subtable.

 

For dichotomies, text output:

PKMAP=*

MAXPAGE=40

ASCII=No

*

 

For dichotomies, webpage output, with automatic page-breaks when printed:

PKMAP=*

MAXPAGE=40

ASCII=Webpage

*

 

For polytomies:

 

 

Continuation lines:

When there are too many item numbers to fit on one line, they are continued on the next line, indicated by ":"

 

 

What observation goes where:

 

This Figure (using the Lucida Console font) shows the location in a PKMAP of every possible response to 6-category (0-5) rating-scale items A, B, C and two-category (0-1) dichotomous items, D, E, by a person of 0 logits ability.

PKMAP= customization

Figure: PKMAP field numbers and positions

 

Format in Winsteps control file:

PKMAP=*    ; inline instructions for the PKMAP output in Table 36

(Field number)= value

....

*

 

PKMAP Size

The internal height of PKMAP grid box is 61 or MAXPAG= value - 8.

The internal width of the PKMAP grid box is LINELENGTH= value - 6.

 

Format in text file:
use Edit menu

Edit/Create file with NOTEPAD to modify these settings.

In text file, for example:

1D = Yes

Save text file as MyPKMAP.txt in the same folder as the Control file

Specification menu: PKMAP = MyPKMAP.txt

 

Field code

Values

Meaning

1T-9T = Top headings

1HY, 1H, 1HN = High side of grid

1M = Measure = Middle (ability)

1LY, 1L , 1LN = Low side of grid

1B-9B = Bottom footers

1E-5E = Color explanations

(blank)

do not display the field

\

blank line

text

display the text in the field location

#nnn# (can be included in text)

display the statistic in the field location

1R = Response = Rating

(blank) or text or #nnn#

#CODE#

#CAT#

(as above)

Response code in the data file

Scored category number

1G = Grid for PKMAP layout

Top left cell of grid is:

HY High measure, Yes reached

HN High measure, Not reached

LY Low measure, Yes reached

LN Low measure, Not reached

Controls layout of the PKMAP by identifying the top left quadrant

1C-5C = Color codes

HTML color codes, e.g.,

light-green

#E7C4A3

The color codes for text in the grid cells:

1C = High Yes (Current level)

2C = High No (Next level)

3C = 50-50

4C = Low Yes (Current level)

5C = Low No (Next level)

1P = Placement of response

T = Rasch-Thurstone 50% threshold

H or F = Half-point and Full-point thresholds

Vertical measure at which to place a response.

1D = Display all the field numbers

"Y" = Display field numbers and values at start of output

The field codes and their values

1F = Minimum mean-square to report

0 = all mean-squares

1.5 = only persons with infit or outfit mean-squares greater than 1.5 are reported

Selects only Kidmaps for misfitting response strings

1S = Sort instructions

n = Entry number descending

N = Entry number ascending

m = Measure descending

M = Measure ascending

f = Mean-square fit descending

F = Mean-square fit ascending

fI, FI = use Infit mean-square
fO, FO = use Outfit mean-square
fB, FB = use bigger of both mean-squares

a = Alphabetical label descending

A = Alphabetical label ascending
a$S3W10, A$S3W10 = Alphabetical sort on part of person label

Order of the PKMAP Kidmaps in the output table.

1V-9V

numbers followed by L or U

logit L or uscale U values for horizontal = lines on grid

Field number not in PKMAP= list

none

(ignored)

Control variable=

PSELECT=???A ; selection

PDELETE=(list of entry numbers)

PDFILE=(file of entry numbers)

ASCII=Webpage

value

control variable for the PKMAP display

T36

-

output the Table 36 PKMAPs

 

 

#nnn#

Value: 1=-8=  Person. 9= Item

#NAME# or #LABEL#

Name or label

#ENTRY#

Entry number

#MEASURE#

Measure (user-rescaled by UMEAN=, USCALE=, UDECIM=)

#COUNT#

Total number of scored responses

#SCORE#

Total raw score

#ERROR#

Standard error of measure (user-rescaled by USCALE=, UDECIM=)

#INMNSQ#

Infit mean-square

#INZSTD#

Standardized Infit statistic: t standardized, locally t standardized, or log-scaled (LOCAL=)

#OUTMNSQ#

Outfit mean-square

#OUTZSTD#

Standardized Outfit statistic: t standardized, locally t standardized, or log-scaled (LOCAL=)

#TITLE#

TITLE= of this analysis

#Y#

Measure-units for each row (line) advance on vertical y-axis.

#$S1W1#

#@fieldname#

Display the label substring

##

#

#CENTER#

Center this field (1T-9T and 1B-9B only)

 

PKMAP= default values for dichotomies (True/False, Multiple-Choice)

 

PKMAP = *

1D = "No"

1F = "0" 

1S = "N" 

1T = " Name: #NAME#" 

2T = " Ref. Number: #ENTRY#                       Measure: #MEASURE#  S.E. #ERROR#  Score: #SCORE#" 

3T = " Test: #TITLE#" 

4T = "\" 

1G = "HY" 

1P = "Half-point threshold" 

1R = "#ENTRY#.#CAT#" 

1HY = "Hard items answered correctly" 

1H = "\<b\>\<i\>-Harder-\</b\>\</i\>" 

1HN = "Hard items answered incorrectly" 

1M = "\<FONT COLOR="RED"\>XXX\</FONT\>" 

1LY = "Easy items answered correctly" 

1L = "\<b\>\<i\>-Easier-\</b\>\</i\>" 

1LN = "Easy items answered incorrectly" 

1B = "\" 

2B = "#CENTER#Each row is #Y# logits" "units" if USCALE<>0

3B = "\" 

1E = "\<SPAN CLASS=1C\>blue\</SPAN\>=Unexpected Yes." 

2E = " \<SPAN CLASS=2C\>orange\</SPAN\>=No." 

3E = " \<SPAN CLASS=3C\>yellow\</SPAN\>=50/50." 

4E = " \<SPAN CLASS=4C\>green\</SPAN\>=Yes." 

5E = " \<SPAN CLASS=5C\>pink\</SPAN\>=Unexpected No." 

1C = "lightblue" 

2C = "#FFBD91" 

3C = "yellow" 

4C = "lightgreen" 

5C = "pink" 

; = = = "default values above. User-set values below." 

*

 

PKMAP= default values for polytomies (Rating Scale, Partial Credit)

 

PKMAP = *

1D = "No"

1F = "0" 

1S = "N" 

1T = " Name: #NAME#" 

2T = " Ref. Number: #ENTRY#                       Measure: #MEASURE#  S.E. #ERROR#  Score: #SCORE#" 

3T = " Test: #TITLE#" 

4T = "\" 

1G = "HY" 

1P = "Full-point threshold" 

1R = "#ENTRY#.#CODE#" 

1HY = "Hard levels reached" 

1H = "\<b\>\<i\>-Higher-\</b\>\</i\>" 

1HN = "Hard levels not reached" 

1M = "\<FONT COLOR="RED"\>XXX\</FONT\>" 

1LY = "Easy levels reached" 

1L = "\<b\>\<i\>-Lower-\</b\>\</i\>" 

1LN = "Easy levels not reached" 

1B = "\" 

2B = "#CENTER#Each row is #Y# logits" "units" if USCALE<>0 

3B = "\" 

1E = "\<SPAN CLASS=1C\>blue\</SPAN\>=Unexpected Yes." 

2E = " \<SPAN CLASS=2C\>orange\</SPAN\>=No." 

3E = " \<SPAN CLASS=3C\>yellow\</SPAN\>=50/50." 

4E = " \<SPAN CLASS=4C\>green\</SPAN\>=Yes." 

5E = " \<SPAN CLASS=5C\>pink\</SPAN\>=Unexpected No." 

1C = "lightblue" 

2C = "#FFBD91" 

3C = "yellow" 

4C = "lightgreen" 

5C = "pink" 

; = = = "default values above. User-set values below." 

*

 

HTML codes can be used with \< and \> replacing < and >. HTML codes are ignored for text output.

Color: \<font color=red\>....\</font\> for HTML colors
or \<span class=1C\>....\</span\> for the colors defined in 1C, 2C, 3C, 4C, 5C

A list of color names is shown at http://www.w3schools.com/colors/colors_names.asp - Hex values can also be used. These color names and hex values are used for 1C-5C.

Bold: \<b\>...\</b\> but bold for 1M and 1R may cause misalignment. Use a color instead.

Italic: \<i\>...\</i\> but bold for 1M and 1R may cause misalignment. Use a color instead.

PKMAP Size

The internal height of PKMAP grid box is 61 or MAXPAG= value - 8.

The internal width of the PKMAP grid box is LINELENGTH= value - 6.

 

PKMAP page breaks

Each diagnostic map automatically starts on a new page when Table 36 is output as a webpage (ASCII=W) or as a Word document (ASCII=D).

 

Adjusting PKMAP wording

1.With the current PKMAP settings, "Output Tables" menu. Table 36. To list the settings at the start of Table 36, include in your control file:
PKMAP=*
1D = Yes
*

 

2.Table 36 processing may be interrupted with Ctrl+F.

 

3.Copy the PKMAP instructions from Table 36 into a new text file.

 

4.Edit the PKMAP instructions in the new file

 

5.Save the new file

 

6.Specification box: PKMAP=?

 

7.A file dialog box displays. Navigate to the new file. Then click OK.

 

8."Output Tables" menu. Table 36. Again ....

 

Questions:

1.  Can I select cases, e.g., all cases with infit and outfit > 1.33?  Very important to diagnose potential atypical cases.

 

Reply: Include in your PKMAP= file:

1F = 1.33

 

You wrote:

2.  Can I select a particular person, e.g., #123 is interesting because of misfit on infit and outfit?

 

Reply:
Winsteps specification menu box: PDELETE=+123

Output Table 36

Winsteps specification menu box: PDELETE=

 

You wrote: Select on other criteria, e.g., age, gender?

Windows specification menu box:

PSELECT=??????M

 

3.  Can I display the item labels instead of just the item entry numbers on the map?

 

Reply: Include in your PKMAP= file:

1R = #LABEL#

or, if you only want part of the label:

1R =#$S3E5$#    ; for columns 3,4,5 in the item label

 

4.  It does not appear that all cases get PKMAPs, do they?  How are the persons selected?

 

Reply:

Usually everyone has a PKMAP. Your control file or PKMAP= file contains a PSELECT= or PDELETE= instruction. This removes some people.


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