This dataset contains the subset of nouns taken from the Croatian Psycholingustic Database, and expands it with corresponding reaction times in a lexical decision task, gathered in a separate study. The dataset holds information on the following word characteristics: word length; word frequency; subjective frequency ratings; concreteness ratings; imageability ratings; age-of-acquisition ratings; lexical decision reaction times. For each of the words in the dataset, the mean, median, minimum and maximum values (as well as the standard deviation) are listed. In total, data for 2612 words is presented.