studies have been carried out vs studies have carried out

Both phrases are correct, but they are used in different contexts. "Studies have been carried out" is the more common and formal way to express that research has been conducted. On the other hand, "studies have carried out" is less common and would typically be followed by the object of the studies to indicate what they have carried out.

Last updated: March 29, 2024

studies have been carried out

This phrase is correct and commonly used in English to indicate that research or investigations have been conducted.

This phrase is used to describe completed research or investigations. It is often used in formal contexts.

Examples:

Studies have been carried out to assess the impact of climate change on marine life.
Several studies have been carried out to determine the effectiveness of the new drug.

Alternatives:

Research has been conducted
Studies have been conducted
Studies have been performed
Studies have been undertaken
Studies have been executed

studies have carried out

This phrase is correct but less common. It would typically be followed by the object of the studies to indicate what they have carried out.

This phrase can be used when specifying what the studies have carried out. It is less common than the passive voice construction.

Alternatives:

Studies have conducted experiments on...
Studies have performed research on...
Studies have undertaken investigations on...
Studies have executed studies on...
Studies have completed research on...

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studies have been carried out vs studies have carried out