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Background
The purpose
of the case study using Harrison InnerView was to determine the ability of
the InnerView software to predict success for the Lumber Sales Representative.
The building supply company provided 35 profiles of current employees. two
profiles were eliminated due to very low consistency scores (less than –40).
The low consistency score indicates that the individual either attempted
to fool the questionnaire or tried to answer the questions too quickly. Therefore,
the total sample population of valid profiles was 33.
This
case study compares the performance of the employees with the results of
the Harrison InnerView profile. All the employees in the sample were rated
according to their job performance by supervisors using the performance rating
model below. The profiles of the employees were then analyzed in relationship
to performance in order to determine the factors that relate to success in
the Lumber Sales Representative position. In addition, the job was analyzed
in order to assess the traits that were required for this position. These
traits were given special attention when analyzing the traits that relate
to performance. However, all 130 traits in the Harrison InnerView system
were analyzed in relationship to performance.
Performance
scoring
The InnerView
consultant and the building supply company management team identified five
key performance factors for this Lumber Sales Representative position and
developed a model that weighted the importance of each factor and adjusted
the sales volume factor for the length of time the individual had been in
the position. As a side benefit, this model can now be implemented into quarterly
performance evaluations.
The five
categories tracked are as follows:
1) Volume:
average monthly sales volume for previous 12 months
2) Margin:
average monthly profit margin on sales volume for previous 12 months
3) Credits:
credits to the builder’s account for jobs delivered with extra materials.
This costs the company money to pickup and restock.
4) D/R’s(deductions/returns):
returned items from builder that were delivered in error. This is important
because it costs the company substantially to have to go to the job site
and pick-up the order, re-stock and make the correct delivery. In addition,
fewer returns relates to greater customer satisfaction. This indicates how
accurately the orders are placed by the salesperson.
5) Average
Ticket Size: average monthly ticket size for the last twelve months.
Each
factor was given a rating based upon a scale between 0 and 100 according
to the following:
| 90-100 |
Excellent to Best |
| 80-89 |
Very Good |
| 70-79 |
Average to Good |
| 60-69 |
Below average |
| 40-59 |
Poor |
| 0-39 |
Extremely poor |
Next,
each performance factor was given specific criteria for making the ratings.
In addition, the sales volume factor was adjusted according to the length
of time in the position. The values given below were arrived at through discussion
with the senior management team and were based upon the results expected
from someone in this position.
In the
sales volume model below, the ratings take into consideration the degree
of experience that the person has in the position or previous similar positions.
For example, if Person A has been in the position for 6 years and is selling
$400,000 per month of product, he/she should receive a score of 100. Person
B is selling only $160,000 per month of product (which is about average)
and thus would receive a performance rating of 75. However, if person B has
only been in the position for one year then a more lenient requirement is
applied. If, for example, $160,000 is considered to be top performance for
having been in the position for only one year, then person B would receive
a performance rating of 100 rather than only 70-75. This is to compensate
for the cumulative nature of sales.
The table
below provides performance expectations for various levels of time in the
position starting from six months up to three years. The 5 year category
is for seasoned salespersons with five or more years. Those individuals
between the three and five year marks should be placed into the category
to which they are closest.
Performance
rating for average monthly sales volume related to different lengths of employment.
| RATING |
SIX MO. |
1 YR |
2 YRS |
3 YRS |
5 YRS |
| 90-100% |
$55k |
$100k |
$200k |
$300k |
$400k |
| 80- 89 |
$50k |
$90k |
$150k |
$200k |
$300k |
| 70-79 |
$45k |
$80k |
$125k |
$175k |
$175k |
| 60-69 |
$40k |
$70k |
$100k |
$150k |
$140k |
| 40-59 |
$35k |
$60k |
$80k |
$125k |
$100k |
| 0-39 |
$30k |
$50k |
$75k |
$100k |
$<99k |
Performance
rating for margins, credits, and D/R’s – used for all experience levels
| RATING |
MARGIN |
CREDITS |
D/R’S |
| 90-100% |
27% |
1-2% |
.2% |
| 80- 89 |
25-26.99% |
2% |
.35% |
| 70-79 |
24-25% |
2.5% |
.5% |
| 60-69 |
22-23.99% |
3.5% |
.6% |
| 40-59 |
20-21.99% |
4-5% |
.7% |
| 0-39 |
<20% |
>5% |
>.7% |
Performance
levels for Average Ticket Size
| RATING |
AVERAGE TICKET SIZE |
| 90-100 |
>$1000 per month |
| 80-89 |
$801 – 1000 per month |
| 70-79 |
$701 – 800 per month |
| 60-69 |
$601 – 700 per month |
| 40-59 |
$500 – 600 per month |
| 0-39 |
<$500 per month |
In addition,
each performance factor above was given its own importance rating based upon
its level of importance to overall performance in relationship to the other
factors. The various factors were given the following weightings:
| Sales Volume |
40% |
| Margins |
10% |
| Credits |
15% |
| D/R’s |
15% |
|
|
| Avg Ticket
Size |
20% |
Example:
John Doe
Step
1: Rate each category
| 0 |
years tenure with average monthly volume at $150,000 – rating
of very good @ 89 |
| 1 |
average margin of 23% - rating of below average @ 65 |
| 2 |
average monthly credits of 2.5% -rating of good @ 79 |
| 3 |
average D/R’s of .35% - rating of very good @ 89 |
| 4 |
average invoice size of $875 – rating of very good @ 85 |
Step
2: Multiply scores by weighted percentage and derive a final performance
rating
| Monthly volume
- |
89 X 40% = 35.6 |
| Margins- |
65 X 10% = 6.5 |
| Avg. Invoice
size- |
85 X 20% = 17 |
| Credits- |
79 X 15% = 11.85 |
| D/R’s- |
89 X 15% = 13.35 |
| Total Performance
Rating: |
84.3 or rounded off to 84 |
This
Study
The aim
of the research was to determine the exact traits that make salespersons
successful at the building supply company and to determine the relative accuracy
of the system to predict success based upon the “job template” that incorporates
those traits. The template formulates those traits into “traits to have”
as well as “traits to avoid”. The template is then used to measure future
applicants and serve as a developmental guide for current employees. The
template is shown by a graph that indicates how a person scores against each
of the required traits and then offers a final “bottom line” score between
zero and one hundred that represents the individual’s level of “total suitability”
for a particular position. A score of one hundred represents a person who
is completely suitable for that position. Assuming the person is eligible
for a position (has the education, experience and technical skills), a suitability
score of 75 or greater represents a person who has a good probability of
performing effectively in that position. A score of 74 or less represents
a person who is considered to be unlikely to perform well in that position.
Accuracy
level of results
The results
showed a very high predictive accuracy and a strong correlation between the
InnerView suitability score and the actual job performance. This indicates
that the template includes a fairly comprehensive set of traits related to
suitability for this position.
The results
were analyzed in two ways: the predictive accuracy and the variation
between the suitability scores and the performance ratings:
1)
Predictive accuracy - A prediction is considered accurate if one or more
of the following conditions are met:
a) The suitability score is 75 or greater and the performance score
is 75 or greater
b) The suitability score is less than 75 and the performance score
is less than 75.
c) The suitability score is within 6 points of the performance score.
The logic
behind this definition - If the suitability score were 75 or above and the
person were eligible for the position, it would indicate a prediction that
the person would probably succeed in the position. If the suitability score
were less than 75 and the person was moderately eligible (not highly eligible)
for the position then this would indicate a prediction of below average performance.
Also, if the suitability score were within 6 points of the performance score
it would indicate a very close prediction and thus should also be considered
accurate. The suitability score for each person appears on the template in
the far right-hand column of the table.
From
the research sample, 31 of the 33 employees (94%) showed a correlation between
the InnerView suitability score and performance to be accurate, according
to the definition above.
2) Variation
between the suitability ratings and the performance ratings
The degree
of variation between the suitability score and the performance ratings also
provides an effective means of understanding the accuracy level of the methodology.
The variation was examined in two ways: the average variation between the
predictive suitability rating and the performance rating and the percentage
of predictions that fall within different ranges of closeness.
The average
variation between the suitability score and the performance rating was 5.97
points. This indicates a close relationship between the suitability score
and the performance ratings.
Next
we examined the percentage of employees whose two scores (performance rating
and predicted suitability score) were within 5 points, 8 points, 10 points
and 15 points. The table below shows these percentages for each group.
Variation
between performance rating and predictive suitability score
| Within 5 points |
Within 8 points |
Within 10 points |
Within 15 points |
| 48% |
73% |
82% |
91% |
If the
two scores were within five points, the prediction would be considered to
be extremely accurate. If within 8 points, the prediction would be considered
to be quite accurate. If within 10 points, the prediction should still be
considered to be reasonably accurate. If the two scores are greater than
10 points apart, but within 15 points, it could not be considered to be accurate,
but at the same time could not be considered to be very inaccurate. If the
two scores are greater than 15 points apart, they should be considered to
be inaccurate.
The results
show that the template developed is able to predict job success with a high
level of accuracy. Although the sample size was sufficient to gain accurate
results, it is recommended that for incoming employees, records are kept
for performance and profiles. When the sample size reaches 200, it is recommended
that the template is adjusted using the larger sample size.
Traits required for success
The research indicates that the success factors for
this position include:
The enjoyment of trying to influence
others
An optimistic and cheerful outlook
The desire to improve oneself
Enthusiasm about one's goals
The desire for a challenge
The enjoyment of teaching others
The tendency to take a great deal of initiative
An interest in building or making something
The enjoyment of working with numbers
The tendency to be systematic
The desire for a stable career
The enjoyment of working with one’s hands
The research indicates that there are also
factors that will hinder success in this position. These include:
Being overly authoritarian
Being evasive
A dislike for working outdoors
A dislike for analytical tasks
Being blunt
A low tolerance for deadlines
The tendency to be skeptical
Being fast but imprecise
Being overly permissive
Being harsh or punitive
Being overly dominating or self-centered
Lacking an interest in business or finance
A reliance on intuition for making decisions
A need to have others be diplomatic
A need to have others be frank
The tendency to be disorganized
Being overly assertive
Being overly self-certain
An extreme discomfort with conflict or being overly
comfortable with conflict
A dislike of having to enlist the cooperation of others
A dislike of having to perform precision tasks
A tendency to be overly reserved or introverted
These
traits as formulated in the Harrison InnerView software will enable a future
prediction level of success for the sales position of at least 80%.
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