Using a foreign language changes the outcomes of cognitive processes in situations of moral dilemmas, decision-making, or lying. This change is attributed to the foreign language effect, which refers to differences in the outcomes of cognitive processes depending on the language used. A growing body of literature describes the emotional distance that occurs when using a foreign language instead of the mother tongue. The aim of this research was to examine whether there are differences in word valence assessments depending on whether the stimulus word is presented in Croatian or Spanish, i.e. native or foreign language. 45 nouns were selected from three categories of words: positive, neutral, and negative. The words were selected from the Spanish word base and translated into Croatian, and words that were not assessed as extremely emotional were selected. An experimental design was used in which one variable was language and the other was word type (positive, neutral, or negative). The participants’ task was to estimate how negative or positive they thought the displayed word was. Respondents who speak Croatian as their mother tongue and Spanish as a foreign language participated in the research, randomly divided into two groups. One filled out the questionnaire in Croatian, and the other in Spanish. The results of this research do not confirm the effect of a foreign language.