A comma splice is a punctuation mistake when you link two independent clauses with a COMMA instead of a FULL STOP or LINKING WORD,* it's a very common mistake, even for high-level learners,* it's very easy to fix.
Look at this terrible 'Band 9 Model' essay I saw on Pinterest yesterday,* it is full of comma splices - can you spot them?
*In all of the sentences above, I've used a comma where I should use a full stop,* you can see how confusing this is for the reader.
Example 1 (corrected)
An evaluation of the importance of time is essential. Many people ...
I will do a full blog about comma slices (and run-on sentences) next.