Okay, HE is ONLY 15 months old... and he is in a "Toddler" class... my thinking is, that the other kids are older than him???...there is thus a big difference in developmental ability. THUS, I would NOT compare him to the others in the class.
For me, I consider a 15 month old as "not" a full-blown "Toddler." It is actually "pre-toddler." Toddlers are into full Toddler-hood from 2 years old. A 15 month old will simply NOT be congruent with an "older" Toddler... nor as adept.
"Toddler" as a word, is to me, more accurately applied to 2 years old and above. Under 2 years old, they are still a baby, and simply not on par with a 2 year old. There is a BIG developmental difference between these ages, all around.
Now, IF they other kids are his SAME exact age...then you can observe any "differences" developmentally, between them. But, differences are normal to an extent, because each child develops differently, some being on par, some a bit later, some advance.... but all being "within" normal development.
"Delays" are usually when a child is more than 3-5 months behind. Or more.
Boys develop later, in speech and emotional maturity, and in attention ability. It is gender based.
Deeming his as "ADD" is, to me, MUCH to young to label him such. Assessments for ADD or attention disorders are usually more accurate at older ages.... at this age, a child is naturally less attentive... they simply DO NOT have lengthy "attention spans." They are not developed to that point yet.
Also, it may just be his social comfort level.. .maybe he does not like big crowds (hence crawling off to play by himself), is not necessarily a "problem." EACH CHILD, has their own personality/disposition/socialization preferences... its fine. You just have to know your child and their style of personality. My daughter, did not like big crowds either. My son doesn't mind. They are each just different personalities with their own interests.
ALSO, it may be that he is too young for these type of classes... some babies/kids are just different in their pacing and "wanting" to do it. No biggie. To me, to "expect" a 15 month old to be in a structured class AND sit still AND to follow direction for the entire length of the class.... is asking too much, per their age-stage. At this age, their attention spans, after about 10-15 minutes, just naturally wanders. AND it very much depends on whether a child is tired or not... or if this class is at his normal "nap time." MANY of these classes, are actually wrongly scheduled, because they make the classes at a child's normal nap times. THEN, to expect a 15 month old to SING songs and have bubble time... is to me, not appropriately gauged. This is more appropriate for OLDER toddlers. I know, I have taken my kids to these kinds of classes...and the younger toddlers are simply NOT adept at doing what the "older" toddlers are doing.
Some kids are also more introspective (a great skill) and observer types... versus some are more extroverted and social and verbal. No biggie. NO child has to be like the others... just nurture HIS strengths/interests/abilities/curiosity.
And yes, there IS a difference in development between girls and boys. I know, I have a boy and girl and have studied the development of both.
Sure, ask the Pediatrician... but if his overall development is on par and within range, IT IS FINE.
Do NOT compare him to others... a child can tell when they are being compared.... AND, just go according to HIS own personality.
Perhaps, have him attend these classes when he is older and more in tune with it. "Accelerating" a child or putting them in these classes, just to keep up with the pacing of kids nowadays and keeping up with other kids, is not always the best thing for them. But rather, let them play and interact normally at their own pace.
Here is a "speech, language,and hearing development checklist" from a well known Children's hospital in my city:
(For 12-18 months):
- identifies body parts, people, and toys on request.
-locates sounds in all direction
- indicates wants by naming items
-uses jargon (sounds like sentences, but few understandable words)
- Uses a few words (like "mama", "dada").
Bear in mind that a child this age, a boy, does not speak in perfectly enunciated articulated "words" yet... nor do they do complex soliloquies, unless they are Shakespeare.
And YES, boys are very adventurous and active.
All the best,
Susan