TABLE 2.

Eight spelling error categories with descriptions are presented with examples of Swedish and English corresponding errors.

	Description	Swedish examples	English examples
Doubling errors	When a consonant is doubled or when the second consonant is missing (Nauclér, 1980)	Råta (Råtta) [‘rat’] Mussen (musen) [‘the mouse’] Äklig (äcklig) [‘disgusting’]	Faithfull, Ticet
Letter insertion	When an extra letter is inserted (Wengelin, 2002)	Taxsi (Taxi) [‘taxi’]	Priemary, Dierect
Letter omission	When a letter is missing (Wengelin, 2002)	Ijäl (ihjäl) [‘to death’]	Belive, Goverment
Inversions	When two letters change place (Wengelin, 2002)	Cylka (cykla) [‘bike’/’biking’]	Freind
Letter substitution	When an incorrect letter is replaced instead of the intended letter (Wengelin, 2002)	Sjönt (skönt) [‘pleasant’] Sengen (sängen) [‘the bed’]	Repitition, Definitaly
Errors in diacritic letters	Accurate in Swedish, when letters with dots are confused with other letters that look similar (Svartholm, 2006)	A, Å, Ä and O, Ö (Swedish) Äffar (affär) [‘store’]
Confusion of similar words	When using a word that looks like another word (Andersson, 1994)	Fantastisk and faktisk [‘fantastic’ and ‘actually’]	Expect, except and desert, dessert
Influence from Sign Language	When a child shows any influence from STS, for example when a spelling error is influenced from STS reduced mouth movements (Bergman and Wallin, 2001) or from a handshape (Bowers et al., 2016)	Falska and börd (Flaska and bröd) [‘bottle’ and ‘bread’] Rätt instead of rädd (‘right’ and ‘scared’)	Sorpt instead of sport Vorival instead of funeral (the handshape for funeral is formed as a V in ASL)