User testing is primarily conducted to identify usability issues in a product or service, such as problems with navigation, functionality, or design.

Laboratory testing is not a common type of user testing, as it involves testing products in a controlled environment, which may not accurately reflect real-world usage conditions.

The purpose of a usability test is to identify specific usability issues that users may encounter when using a product, such as problems with navigation, functionality, or design.

Focus groups are not a common usability testing method, as they involve group discussions rather than individual testing sessions.

The primary goal of a field test is to evaluate the usability of a product in a real-world setting, where users can interact with the product in their natural environment.

Remote testing is not a common field testing method, as it involves testing products remotely, rather than in a real-world setting.

The purpose of a remote test is to evaluate the usability of a product remotely, allowing users to participate in the test from their own location.

Lab testing is not a common remote testing method, as it involves testing products in a controlled environment, rather than remotely.

The purpose of a guerrilla test is to evaluate the usability of a product in a public setting, where users can interact with the product in a natural environment.

Focus groups are not a common guerrilla testing method, as they involve group discussions rather than individual testing sessions.

The primary goal of a usability inspection is to identify usability issues in a product's design, such as problems with navigation, functionality, or layout.

Focus groups are not a common usability inspection method, as they involve group discussions rather than individual testing sessions.

The purpose of a cognitive walkthrough is to evaluate the usability of a product's design by simulating the thought process of a user as they interact with the product.

Heuristic evaluation is not a common cognitive walkthrough method, as it involves evaluating a product's design against a set of usability heuristics.

The primary goal of a pluralistic walkthrough is to evaluate the usability of a product's design from multiple perspectives, such as those of users, designers, and developers.