• Microsoft Excel Test - used  during the recruitment process to check how proficient candidates are with Microsoft Excel features and capabilities
• Aptitude Test - measures peoples verbal reasoning skills, pattern recognition, decision making abilities and ways of solving challenges
• Numerical Reasoning Test - measures candidate's ability to interpret numerical data, charts and graphs
• Psychometric Test - measure candidates' suitability for a role based on the required personality characteristics
• Criteria Cognitive Aptitude Test (CCAT) - measures an individual's aptitude, or ability to solve problems, digest and apply information, learn new skills, and think critically
• IQ Tests - measures job candidate's intelligence, analytical skills and ability to recognize patterns
• Behavioral Test measure how people differ in their levels of motivation, values and opinions in relation to their interests.
• Personality Test - measure how people differ in their ways of working in the teams with other and working as individual contributors.
• Leadership Test - measures individuals' abilities and skills as they refer to leading, managing and directing others
• Situational Judgement Test (SJT) - measures how candidate would behave in work-based situations similar to those real scenarios that could be encountered in the job

Most of the times employers use assessment tests when hiring new candidate or promoting a person within the organization:

• Hiring and Employment Assessment - hiring manager or HR might choose to test job candidate before hiring  to ensure candidate is a good fit for the position.
• Growing Talent inside the organization - for example some companies use the test before making decision to promote the candidate for the position inside the organization
• Determine Levels of Motivation - for example, if your company is looking to implement a new system or technology it might be helpful to assess people on their interests and motivations related to new technology.
• Hiring interns for a full time roles - very frequently organizations need to be able to assess analytical skills and cognitive abilities to determine if person is the right for for the position. Very often psychometric tests can help you to uncover values and interests that are fundamental to overall career satisfaction.
• Converting Temporary worker or Consultant into Full time position - a lot of times companies are interested in building capabilities inside the organization or trying to reduce the cost and offer contractors, consultants or temporary workers, currently working at the company, to convert to full time jobs

Assessment Tests are very stressful, and it is easy to loose control and to rush to complete all questions. Effective time management on the test is essential to getting a good score on the test and you can increase your chance of passing the assessment by practicing the test beforehand.

If you managed to get nervous on the test try removing anxiety by using calming breathing exercises, taking a restroom break to regroup, sip some water, take a breath between test sections or eat a quick snack.

One of the most useful recommendations to prepare for employment assessment test is to find out which tests are used for the job position you are applying for and practice beforehand. Ask the HR or hiring manager if they use their own test or whether test is administered by a third party vendor. Even though you would never know about what exact questions you will be asked throughout the testing process, when practicing the similar test you will become familiar with the types of questions you will be presented with the time constraints which will make your practice extremely realistic and will get your ready for the real test.