Career Assessment Inventory CAI: How It Works and What It Costs

If a school counselor handed you this test, or you saw it named on a program form, here is what it is. The Career Assessment Inventory is a career interest test written by psychologist Charles B. Johansson and sold today by Pearson. You mark how much you like or dislike hundreds of hobbies, school subjects and job titles. Your marks are then laid beside those of people who hold each job and enjoy it. Mark things the way happy electricians tend to, and you score high on the electrician scale.

So the CAI measures interest. It finds jobs whose workers like what you like. Knowledge, skill and day-to-day work habits are outside its scope.

Career assessment inventory CAI: its author, its purpose and its scales

Johansson first published the CAI in the 1970s, and a short research encyclopedia entry on the CAI covers its history. He aimed it at people heading for jobs that need two years of training or less, such as skilled trades, technical work and service jobs. A later edition, the Enhanced Version, added careers that need a college degree. Both editions are still sold.

Today the CAI career test is mostly used by school counselors, community college advisers, workforce programs and vocational rehabilitation counselors, who help adults return to employment after injury or illness. The typical use is narrowing things down. A high school junior torn between a trade school, community college and a four-year degree can spot the families of work their likes point to. An adult coming back to work can test a hunch before paying for retraining.

Your answers are scored on four layers. The top layer is six broad themes, taken from John Holland's well-known model of work interests. Under that sit basic interest scales, about two dozen narrower areas such as mechanical work, sales or teaching. Then come the occupational scales, one per job, which show how closely you match the people in that job. Last are a few special scales: art versus machines, crowded jobs versus quiet ones, liking for school, and the spread of your interests.

You can't sign up for the CAI on your own. A counselor or psychologist orders it from Pearson, then gives you a paper booklet, a computer at their office, or a link to take it online. When you finish, your answers go back to them for scoring, and you usually meet again to talk the scores through.

CAI test length and what the questions look like

The Enhanced Version has 370 items and the Vocational Version has 305. Pearson says either one takes 35 to 40 minutes, and both are written at an eighth grade reading level for anyone aged 15 or older. Each item is a word or a short phrase, so the pace is quick.

Pearson doesn't publish the item list, so here are made-up examples of the style. You might see an activity like "fixing a lawn mower", a school subject like "chemistry", or a job title like "pharmacist". For each one you choose from five answers, running from like very much, through a neutral middle, to dislike very much. You do that a few hundred times, and you are done.

Three habits help. First, rate the activity itself, not the pay or the status that comes with it. Second, don't ask whether you could do it; the CAI doesn't care, and thinking about skill skews your answers. Third, trust your gut and keep moving. If you have never tried something, picture an afternoon spent doing it and answer for that.

The six Holland themes behind CAI scoring

The six General Themes are the first thing on a CAI report, and they come from John Holland's idea that six types can describe both people and jobs. You will see them shortened to RIASEC, which is also how the government-funded O*NET Interest Profiler groups careers.

• Realistic: working with your hands, outdoors or with machines. Think mechanic, carpenter or farmer.
• Investigative: digging into how things work. Think lab technician or engineer.
• Artistic: making things that express ideas. Think graphic designer or musician.
• Social: teaching, serving or looking after others. Think nurse aide or teacher.
• Enterprising: selling ideas and running things. Think salesperson or store manager.
• Conventional: organizing records, numbers and processes. Think bookkeeper or office manager.

Most people score high on two or three themes, and the top ones are often written as letters, such as RI or SEC. Those letters tell you which corner of the job market to search first. The occupational scales further down the report are where the CAI gets specific.

Pearson offers two kinds of report. The profile report is a few pages of scores, mostly charts and numbers. The interpretive report adds written explanation of what the scores mean and which jobs to look into. Your counselor picks which one to order, and the price is different for each.

What a CAI score report tells you, line by line

Your marks are measured against two groups. One is a general sample of adults and students, which tells you whether your interest in, say, mechanical work is higher or lower than most people's. The other is a separate group for each occupation on the list, made up of people working in that job. Your occupational score shows how much your likes and dislikes resemble theirs. A high score on the dental assistant scale means you like many of the same things dental assistants do. Being good at the job, or liking its daily routine, is a separate matter the CAI can't judge.

Scores come with labels such as very high, high, average and low, so you don't need to read the raw numbers. The special scales sit at the bottom. Scoring low on the spread of your interests, for example, can explain why few jobs scored high: you like a narrow set of things, which is useful to know in itself.

The report is written for a trained professional to explain to you, and that is how it should be used. A good session turns a page of scores into three or four careers to research, and a plan for doing it. If you get a report with no one to go over it, ask the person who ordered it for that meeting.

How steady CAI scores are, in numbers

Your scores are compared with a group of 900 employed adults and students, according to Pearson's Canadian store. When people took the CAI twice, their scores barely moved. A summary of a 1990 study by Zarrella and Schuerger gives retest correlations of 0.91 to 0.96 on the six themes, 0.88 to 0.95 on the interest areas, and 0.81 to 0.96 on the job scales.

Here is what those numbers mean. A correlation of 1.0 would mean everyone landed in exactly the same order the second time. Anything above 0.8 means a second report would look much like your first. The same summary says the items inside each scale agree with each other at 0.89 to 0.92, so each scale measures one thing.

Steady is not the same as right, though. Whether high scores point to jobs people go on to enjoy is a separate question, called validity. The fullest independent review of the CAI is in the Tenth Mental Measurements Yearbook, which charges to read it. The APA explains what reliability and validity mean.

There are two CAI tests, not one, and the counselor chooses which you take. It helps to know the difference, because each one compares you with a different set of jobs.

Enhanced vs Vocational: the two CAI versions

The career assessment inventory enhanced version has 370 items and scores you against 111 occupations. Its list runs from skilled trades to jobs requiring a bachelor's degree or beyond, so it suits someone still deciding how much school they want.

The career assessment inventory vocational version has 305 items and scores you against 91 occupations. Pearson describes every one as a job that needs two years or less of training after high school: skilled trades, technical work and service jobs. It suits someone who already knows they want to start working soon, or go to a community college or trade school.

Everything else is the same. Both take 35 to 40 minutes, both read at an eighth grade level, both are for ages 15 and up, and both use the same six themes. A rough rule: if college is on the table, the Enhanced Version shows you more. If it isn't, the Vocational Version spends more of its list on jobs you might pick.

Career assessment inventory cost: kits, reports and the counselor

The test isn't sold to the public. Pearson lists it at qualification level B, meaning the buyer needs a relevant master's degree, such as counseling, psychology or social work, or formal training in giving and reading this kind of test. So the people who administer the career assessment inventory are school counselors, rehabilitation counselors, career center staff and psychologists.

On Pearson's US store in October 2026, a starter kit for the Enhanced Version costs $96.90 with the desktop scoring software, $97.40 with online scoring, or $103.30 with the mail-in scoring service. Each person tested then needs a report, which runs from $8.30 to $27.50 depending on the report type and the scoring method.

What you pay depends on how you reach it. Through a school, a state vocational rehabilitation office or a workforce program, the test and the session are often free to you. Through a private career counselor, you pay for their time, and that fee is usually bigger than the cost of the test itself. Ask what is included before you book.

If the CAI is new to you, you have probably heard of its better-known cousin, the Strong Interest Inventory. It gets a full write-up in our Strong guide. Here is how the two compare.

CAI vs Strong Interest Inventory, explained plainly

They have a lot in common. Both rate your likes and dislikes, both use Holland's six themes, both compare you with people working in each job, and both need a qualified professional to give them.

The difference is which jobs they compare you with. The Strong leans toward careers that need a college or graduate degree and covers far more occupations. The CAI was built around trades, technical and service jobs. That is why college career centers mostly use the Strong, and why the CAI shows up in high schools, trade programs and vocational rehabilitation. So the Strong being better known says more about where each one is used than about which is the better test.

Two other tools come up often. Holland's own Self-Directed Search uses the six themes too, and is self-scored. And the free interest quiz at My Next Move returns your six-theme letters plus suggested careers in about ten minutes. If you have no counselor, start there. Our pieces on the interest inventory test, the CareerOneStop interest assessment and the career inventory test walk through the free options.

Four interest tests side by side

Test

Who can buy it

Items

Time

Jobs it scores

Cost to you

Who explains it

Best fit

Career Assessment Inventory

Qualified professionals only

370 (Enhanced) or 305 (Vocational)

35 to 40 minutes

111 or 91

Often free through a school or program; kits from $96.90 plus a report fee

A counselor

Trades, technical and service work, or unsure about college

Strong Interest Inventory

Certified practitioners only

291

30 to 45 minutes

122 jobs, on 244 scales

You pay the practitioner for the report and session

A Strong-certified practitioner

Students and adults weighing careers that need a degree

Self-Directed Search

Anyone

Five short sections

About 20 minutes online

Lists jobs that match your three theme letters

$18.95 online

You; no training needed

Anyone who wants their theme letters without a counselor

O*NET Interest Profiler

Anyone

60 (short form)

About 10 minutes

Links to over 900 jobs

Free

You

A first step when you have no counselor

Figures come from Pearson, an encyclopedia entry on the Strong, the Self-Directed Search price page and the O*NET Interest Profiler page. The Strong's publisher has since added jobs, so newer editions may list more.

Good uses of the CAI career test, and poor ones

The CAI suits a teenager choosing between work, a trade program, community college and a degree; an adult returning to work through a rehabilitation program; and anyone whose school or counselor already offers it.

It suits you less if you have no counselor, since you can't buy it alone, or if your question isn't really about what you like. Plenty of adults chose work they were interested in and still feel worn down by it, and an interest test can't explain that, because the cause usually lies in how the job runs: its speed, how much of the day involves people, who makes the calls. Our page on the career interest assessment gives the wider picture.

If that second question is yours, try Pigment's career test. It has 120 forced-choice items on your working habits, and its 36-page report sets out your strengths and how you tend to work, then ends with a careers section listing roles to research. It costs $79. Pigment hasn't yet published a study of its own accuracy, so treat the roles as leads to check.

No Counselor? Start With How You Work

The CAI covers your likes. Pigment adds how you work, plus jobs worth researching, with no appointment. $79, paid once.

Take Pigment's career test